JP2003045344A - Plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma display panel which enhances high definition of the screen and display performance. SOLUTION: The plasma display panel is equipped with a phosphor layer 16 is formed on a lateral wall part 25b, a vertical wall part 25a of a rib, and a back surface substrate facing a unit luminous region C1 of a discharging space, electrode body parts Xbj , Ybj composed of metal layers in which a first row electrode Xi and a second row electrode Yi , forming a pair of row electrodes, extend in the row direction, and bump electrode parts Xai , Yai , composed of transparent conductive film facing each other with a prescribed discharging gap g, protruding from the electrode body parts Xbj , Ybj toward the other mate row electrode forming a pair, for every unit luminous region of a discharging space. The first row electrode Xi and the second row electrode Yi forming the pair of row electrodes are arranged so as to be alternately located in the column direction at adjacent display lines, and the bump electrode parts Xai , Xai+1 , located back to back with each other between the adjacent display lines in the column direction of at least one row electrode out of the first row electrode Xi and the second row electrode Yi , share one common electrode body part Xbj .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly to a cell structure of this plasma display panel.

[0002]

2. Description of the Related Art In recent years, a surface discharge type AC plasma display panel has been attracting attention as a large and thin color screen display device, and its spread has been promoted.

FIG. 1 is a front view schematically showing a conventional cell structure of this surface discharge type AC plasma display panel, FIG. 2 is a sectional view taken along line VV of FIG. 1, and FIG. It is sectional drawing in the WW line of FIG.

In FIGS. 1 to 3, a plurality of row electrode pairs (X0, Y0) and a plurality of row electrode pairs (X0, Y0) are formed on the rear surface of the front glass substrate 1 which is the display surface of the plasma display panel. ), And a protective layer 3 made of MgO that covers the back surface of the dielectric layer 2 are provided in this order.

The row electrodes X0 and Y0 are transparent electrodes Xa0 and Ya0 made of a transparent conductive film such as ITO having a wide width.
And bus electrodes Xb0 and Yb0 made of a metal film having a narrow width to supplement the conductivity.

The row electrodes X0 and Y0 are alternately arranged in the column direction so as to face each other across the discharge gap g0, and each row electrode pair (X0, Y0) forms one display line (row) of the matrix display. ) L is constructed.

On the other hand, on the rear glass substrate 4 facing the front glass substrate 1 through the discharge space S0 in which the rare gas is sealed, a plurality of row electrodes X0 and Y0 are arranged so as to extend in a direction orthogonal to the pair of row electrodes X0 and Y0. The column electrode D0, the strip-shaped partition walls 5 formed so as to extend in parallel between the column electrodes D0, and the side surfaces of the partition wall 5 and the column electrodes D0 are covered with R, G, respectively.
And a phosphor layer 6 color-coded B.

Then, in each display line L, the column electrode D0 and the row electrode pair (X0, Y0) intersect with each other, and the discharge space S0 is partitioned by the partition walls 5, so that the discharge cells C0 which are the unit light emitting regions are respectively formed. It is demarcated.

Display of an image on the above-mentioned surface discharge type AC plasma display panel is performed as follows.

That is, first, by address operation, a row electrode pair (X0, Y0) and a column electrode D0 in each discharge cell C0.
Discharge is selectively carried out between the lighted cells (dielectric layer 2
Discharge cells C0 having wall charges formed therein and light-off cells (discharge cells C0 having no wall charges formed in the dielectric layer 2) are distributed on the panel corresponding to the image to be displayed.

After this address operation, a discharge sustaining pulse is alternately applied to the row electrodes X0 and Y0 of each row electrode pair all at once on all the display lines L, and each time the discharge sustaining pulse is applied, lighting is performed. A surface discharge is generated in the cell.

As described above, ultraviolet rays are generated by the surface discharge in the lighting cell, and R, G, and R in the discharge space S0 are generated.
An image to be displayed is formed by exciting each of the B phosphor layers 6 to emit light.

[0013]

In the surface discharge type AC type plasma display panel as described above, as shown in FIG.
As shown in FIG. 3, the phosphor layer 6 is also formed on the side surface of the strip-shaped partition wall 5 to increase the light emitting area in the discharge cell C0, thereby increasing the brightness of the display screen.

However, in the structure of the above-mentioned conventional surface discharge type AC type plasma display panel, when the size of each discharge cell C0 is reduced to increase the definition of the screen, the phosphor layer 6 is changed accordingly. There is a problem that the surface area is reduced and the brightness is reduced.

Further, when the pitch between each row electrode pair (X0, Y0) is narrowed in order to cope with the high definition of the screen, discharge interference occurs in the discharge cells C0 adjacent in the column direction, The problem that erroneous discharge is likely to occur occurs,
Further, there is a problem that an erroneous discharge is likely to occur between the discharge cells C0 adjacent to each other in the row direction.

The present invention has an object to solve the problems in the conventional surface discharge type AC type plasma display panel as described above.

That is, the present invention has one object to increase the definition of the plasma display panel and to improve the display performance. Therefore, it is possible to prevent the deterioration of the brightness and the erroneous discharge in the discharge cell to improve the definition of the screen. It is an object of the present invention to provide a plasma display panel capable of achieving the above.

Furthermore, the present invention provides a display panel capable of preventing the reflection of external light incident on the plasma display panel and improving the contrast of the display screen in order to obtain high definition and improved displayability. The purpose is to do.

[0019]

In order to achieve such an object, the present invention provides, as an invention according to claim 1, in a row direction on a side facing a rear substrate of a front substrate through a discharge space. In a plasma display panel provided with a plurality of row electrode pairs which are arranged in parallel in the extending column direction and each form a display line, and a dielectric layer which covers the row electrode pairs,
A discharge wall is provided between the front substrate and the rear substrate, and a partition wall divides a discharge space into unit light emitting regions in a row direction and a column direction by a vertical wall portion extending in the column direction and a horizontal wall portion extending in the row direction. A phosphor layer is formed on a lateral wall portion and a vertical wall portion of the partition wall facing the unit light emitting region of the space, and a surface on the back substrate, and a first row electrode and a second row electrode forming the row electrode pair, An electrode body composed of a metal layer extending in the row direction, and for each unit light emitting region in the discharge space, project from the electrode body in the direction of another row electrode paired with each other through a required discharge gap. It is provided with projecting electrode portions formed of opposing transparent electrode films, and arranged so that the positions of the first row electrodes and the second row electrodes forming the row electrode pairs in the column direction alternate with each other in adjacent display lines. Has been done, this first It is characterized in that the protruding electrode portions which are back to back between two display lines adjacent to each other in the column direction of at least one row electrode of the electrodes and the second row electrode share the same electrode body portion. There is.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. The plasma display panel of the first embodiment includes a plurality of front display substrates formed of a glass substrate or the like, which are arranged in parallel in the row direction and arranged in parallel in the column direction on the side facing the rear substrate via the discharge space. Row electrode pairs and a dielectric layer that covers the row electrode pairs. Further, a partition wall is arranged between the front substrate and the rear substrate to divide the discharge space into unit light emitting regions in the row direction and the column direction by the vertical wall portions extending in the column direction and the horizontal wall portions extending in the row direction. .

Then, a phosphor layer is formed on the horizontal and vertical wall portions of the partition wall facing the unit light emitting region of the discharge space and on the surface on the rear substrate, and the first row electrode and the second row electrode forming a row electrode pair. An electrode is formed of a metal layer extending in the row direction, and for each unit light-emission region in the discharge space, the electrode main body extends in the direction of another row electrode forming a pair, and a desired discharge gap is provided. And projecting electrode portions formed of transparent conductive films facing each other.

Further, the positions of the first row electrodes and the second row electrodes forming the row electrode pairs in the column direction are arranged alternately in adjacent display lines, and the first row electrodes and the second row electrodes are arranged. The protruding electrode portions that are back to back between two display lines adjacent to each other in the column direction of at least one row electrode of the electrodes share the same electrode body portion.

According to the characteristic feature of the first embodiment, the discharge space between the front substrate and the rear substrate is defined as the unit light emitting region by the partition wall having the vertical wall portion extending in the column direction and the horizontal wall portion extending in the row direction. It is divided for each. Then, the respective row electrodes forming the row electrode pair project from the electrode main body extending in the row direction toward the other row electrodes forming a pair for each unit light emitting region and face each other through a required discharge gap. First row electrodes that are each provided with an electrode portion and are configured so as to be independent in an island shape for each unit light emitting region that is partitioned by a partition wall, and that are arranged back to back in adjacent display lines, or The second row electrodes are configured to share the same electrode body.

Therefore, since the discharge space between the front substrate and the rear substrate is partitioned in the row direction and the column direction for each unit light emitting region by the partition wall, the unit light emitting regions adjacent in the column direction and the row direction are separated from each other. It is possible to prevent erroneous discharge from occurring due to discharge interference, and further, each row electrode forming the row electrode pair is configured to be island-shaped independent for each unit light emitting region. Since the discharge for light emission between the row electrodes is performed independently for each unit light emitting area, even if the size of each unit light emitting area is reduced in order to increase the definition of the image, it is adjacent in the row direction. Therefore, it is possible to prevent the discharge interference from occurring in the unit light emitting region.

In addition, the first row electrodes or the second row electrodes, which are arranged back to back in adjacent display lines, share the same electrode body portion, thereby reducing the installation area of the electrode body portion. Since it is possible to increase the size of the unit light emitting area and increase the light emitting area of this unit light emitting area by that amount, it is also possible to increase the definition of the screen and increase the brightness of the displayed image. Will be able to.

In addition to that, in each unit light emitting region,
The phosphor layer is provided on the side walls (two surfaces) of the partition wall facing the discharge space,
Since the vertical wall portion (two surfaces) and the surface on the rear substrate (one surface) can be formed on a total of five surfaces, the surface area of the phosphor layer, that is, the light emitting area can be increased. Then, with respect to this enlarged phosphor layer, discharge can be generated in the discharge gap formed between the pair of projecting electrodes, and the phosphor layer on each surface can be caused to emit light by the ultraviolet rays generated from this discharge. Therefore, the brightness of each unit light emitting region is increased. Therefore, even if the size of each unit light emitting region is reduced in order to increase the definition of the screen, the brightness of the display screen does not decrease as compared with the conventional one.

The plasma display panel of the second embodiment is based on the plasma display panel of the first embodiment, and the protruding electrode portion is connected to the wide portion and the electrode main body portion which face each other through a discharge gap. It is characterized by having a narrow base end.

In addition to the above-mentioned characteristics, the plasma display panel of the second embodiment has phosphor layers formed on a total of five surfaces facing the discharge space of each unit light emitting region,
For each unit light emitting region in the discharge space, a pair of island-shaped projecting electrodes, each of which is composed of a narrow base end portion and a wide portion facing each other, are formed to project. Therefore, discharge can be generated in the discharge gap formed between the wide portions that are overhanging, and the ultraviolet rays generated from this discharge can cause the phosphor layer on each surface to emit light. Thereby, the brightness of each unit light emitting region can be increased.

As described above, according to the plasma display panel of each of the embodiments of the present invention, it is possible to improve the display performance while achieving high definition of the screen.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Cell Structure Prerequisite for Embodiments] FIGS. 4 to 8 show a cell structure premised on a plasma display panel (hereinafter referred to as PDP) according to the present invention. FIG. FIG. 5 is a front view schematically showing the relationship between row electrode pairs and partition walls, FIG. 5 is a sectional view taken along line V1-V1 of FIG. 4, FIG. 6 is a sectional view taken along line V2-V2 of FIG. 4, and FIG. 4 is a sectional view taken along line W1-W1 of FIG. 4, and FIG. 8 is a sectional view taken along line W2-W2 of FIG.

4 to 8, a plurality of row electrode pairs (X, Y) are arranged on the back surface of the front glass substrate (front substrate) 10 which is the display surface in the row direction of the front glass substrate 10 (the left and right direction in FIG. 4). ) Are arranged in parallel so as to extend.

The row electrode X has a protruding electrode portion Xa formed of a transparent conductive film such as ITO formed in a T shape by a wide portion and a narrow base end portion, and extends in the row direction of the front glass substrate 10 and protrudes. The electrode main body Xb is made of a metal film and forms an electrode main body connected to the narrow base end of the electrode Xa.

Similarly, the row electrode Y also extends in the row direction of the front glass substrate 10 and the protruding electrode portion Ya formed of a transparent conductive film such as ITO formed in a T shape by the wide portion and the narrow base end portion. And the electrode main body Yb made of a metal film forming the electrode main body connected to the narrow base end of the protruding electrode Ya.

The row electrodes X and Y are used for the front glass substrate 10.
Are alternately arranged in the column direction (up and down direction in FIG. 4),
The respective protruding electrode portions Xa and Ya juxtaposed along the electrode body portions Xb and Yb extend toward the row electrode side of the other pair forming a pair, and the top sides of the wide portions of the protruding electrode portions Xa and Ya are respectively They are opposed to each other via a discharge gap g having a required width.

The protruding electrode portions Xa and Ya are formed by vapor-depositing ITO on the front glass substrate 10 and patterning it by photolithography.

The electrode bodies Xb and Yb are respectively composed of black conductive layers Xb1 and Yb1 on the display surface side and a main conductive layer Xb on the back surface side.
It is formed in a two-layer structure of 2, Yb2.

The electrode bodies Xb and Yb are coated with a silver paste mixed with a black pigment and dried, and then a silver paste is further coated on the black silver paste film and dried.
Then, it is formed by patterning by a photolithography method and baking.

On the rear surface of the front glass substrate 10,
The dielectric layer 11 is formed so as to cover the row electrode pair (X, Y), and on the back surface of the dielectric layer 11, the adjacent electrode body portions of the row electrode pairs (X, Y) adjacent to each other are formed. A raised dielectric layer 11A protruding toward the back surface of the dielectric layer 11 at a position facing Xb and Yb and a position facing the region between the adjacent electrode body Xb and electrode body Yb.
Are formed so as to extend parallel to the electrode main body portions Xb and Yb.

The dielectric layer 11 is formed by laminating a film of low melting point glass paste in a predetermined thickness and firing it. The raised dielectric layer 11A has a low melting point on the dielectric layer 11. It is formed by screen-printing a glass paste with a predetermined thickness and firing it.

A protective layer 12 made of MgO is formed on the back side of the dielectric layer 11 and the raised dielectric layer 11A.

On the other hand, the column electrode D is formed on the display side surface of the rear glass substrate 13 arranged in parallel with the front glass substrate 10.
At the positions facing the protruding electrode portions Xa and Ya forming a pair of each row electrode pair (X, Y).
Y) are arranged in parallel at a predetermined interval so as to extend in a direction (column direction) orthogonal to Y).

The column electrodes D are made of Al alloy (for example, Al-
(Mn alloy) is vapor-deposited on the rear glass substrate 13 and patterned by a photolithography method to be formed.

On the display side surface of the rear glass substrate 13,
Further, a white dielectric layer 14 that covers the column electrodes D is formed, and a partition wall 15 is formed on the dielectric layer 14.

The white dielectric layer 14 is formed by applying a glass paste mixed with a white pigment on the rear glass substrate 13 and the column electrodes D and baking the glass paste.

The partition wall 15 has a vertical wall portion 15a extending in the column direction at a position between the column electrodes D arranged in parallel with each other.
And a lateral wall portion 15b extending in the row direction at a position facing the raised dielectric layer 11A.

By the partition wall 15, the discharge space S between the front glass substrate 10 and the rear glass substrate 13 is
A pair of protruding electrode portions X in each row electrode pair (X, Y)
The discharge cells C having a rectangular shape are formed by being divided into portions facing a and Ya, respectively.

The partition wall 15 is formed on the display surface side thereof, but has a two-layer structure of a black layer (light absorbing layer) 151 and a white layer (light reflecting layer) 152 on the back side.
Is configured such that the side wall surface facing to is almost white (that is, the light reflection layer).

The partition wall 15 is formed by applying a low-melting point glass paste mixed with a white pigment and a low-melting point glass paste mixed with a black pigment in this order on the dielectric layer 14 and baking the paste. Layered with a film-like resist, exposed and developed with a double-sided mask to form double-sided openings in the resist layer), and then a white and black glass layer is formed by sandblasting. It is formed by cutting.

The surface of the partition wall 15 on the display side of the vertical wall portion 15a is not in contact with the protective layer 12 (see FIG. 7), and a gap r is formed between them, but the side of the horizontal wall portion 15b on the display side is formed. The surface is in contact with the portion of the protective layer 12 which covers the raised dielectric layer 11A, and shields between the discharge cells C adjacent in the column direction.

The partition wall 1 facing the discharge space S in the discharge cell C
On the side surfaces of the vertical wall portion 15a and the horizontal wall portion 15b of No. 5 and the surface of the dielectric layer 14, a phosphor layer 16 is sequentially formed so as to cover all of these five surfaces.

The color of the phosphor layer 16 is set so that red (R), green (G) and blue (B) colors are arranged in order in the row direction for each discharge cell C.

The discharge space S is filled with a rare gas.

In the above PDP, each row electrode pair (X, Y) constitutes one display line (row) L of the matrix display screen, and discharge is generated by the partition wall 15 composed of the vertical wall portion 15a and the horizontal wall portion 15b. The discharge cells C are defined by dividing the space S.

The image display on this PDP is based on the conventional P
It is performed in the same manner as DP. That is, first, by the address operation, the discharge is selectively performed between the row electrode pair (X, Y) and the column electrode D in each discharge cell C, and all the display lines L are displayed.
The lit cells (the discharge cells C in which the wall charges are formed on the dielectric layer 11) and the unlit cells (the discharge cells C in which the wall charges are not formed on the dielectric layer 11) correspond to the image to be displayed. Distributed on the panel.

After this address operation, discharge sustaining pulses are alternately applied to the row electrodes X and Y of the row electrode pair (X, Y) all at once on all the display lines L, and the discharge sustaining pulses are applied. Surface discharge is generated in each lighted cell each time.

As described above, ultraviolet rays are generated by the surface discharge in the lighting cell, and red (R) in the discharge cell C,
A display image is formed by exciting each of the green (G) and blue (B) phosphor layers 16 to emit light.

In the above PDP, in each discharge cell C, the phosphor layer 16 covers the four side walls of the partition wall 15 facing the discharge space S in the discharge cell C and the display side of the dielectric layer 14 covering the column electrodes D. The surface area of the phosphor layer 16, that is, the light emitting area, is enlarged as compared with the conventional PDP by being formed on the five surfaces.

As a result, the brightness of each discharge cell C is increased, and the brightness of the display screen can be improved as compared with the conventional one, while the discharge cells are increased in order to increase the definition of the screen. Even if the size of C is reduced, the brightness of the display screen does not decrease as compared with the conventional one.

Further, in the above PDP, the protruding electrode portions Xa and Ya of the row electrodes X and Y extend from the electrode body portions Xb and Yb to the row electrode side of the other pair forming a pair, and each discharge cell C has an island. Since each of the discharge cells C is configured to be independent, even if the size of each discharge cell C is reduced in order to increase the definition of the screen, the discharge to the adjacent discharge cell C in the display line L direction (row direction) is performed. There is no risk of interference.

Furthermore, the PDP has a dielectric layer 11
A raised dielectric layer 11A is formed on the side wall, and the protective layer 12 covering the raised dielectric layer 11A is formed by the lateral wall portion 15 of the partition wall 15.
The discharge space S of the discharge cell C that is in contact with the display side surface of b and is adjacent in the column direction (direction orthogonal to the display line L).
Are mutually shielded (see FIGS. 5 and 6, 8), discharge interference between adjacent discharge cells C in this column direction is prevented.

On the other hand, the surface of the partition wall 15 on the display side of the vertical wall portion 15a faces the portion of the dielectric layer 11 on which the raised dielectric layer 11A is not formed, and the vertical wall portion 15a on the display side. Since the gap r is formed between the surface and the protective layer 12 (see FIGS. 6 and 7), the discharge spaces S of the discharge cells C adjacent to each other in the row direction (display line L direction) are separated by the gap r. A slight priming effect is generated, and a priming effect that causes discharges in a chain is generated, and the discharge operation can be stabilized.

Further, the PDP has the electrode body Xb,
By providing the black conductive layers Xb1 and Yb1 respectively on the display surface side of Yb, it is possible to prevent reflection of external light incident through the front glass substrate 10 and improve the contrast of the display screen. Can be done.

Further, the above PDP has the rear glass substrate 1
Since the dielectric layer 14 formed on the display layer 3 is white, the light emitted by the phosphor layer 16 is reflected to the display side and prevented from escaping to the back side. The brightness can be increased.

The dielectric layer 14 also serves as a protective layer during sandblasting.

Further, in the PDP, the black layer 151 is formed on the surface of the partition wall 15 on the display side to prevent the external light incident through the front glass substrate 10 from being reflected at this portion. Thus, the contrast of the display screen can be improved.

Since the four wall surfaces of the partition wall 15 partitioning the discharge cell C are composed of the white layer 152, the light emitted from the phosphor layer 16 is reflected to the display side,
The brightness of the display screen can be increased.

[First Embodiment] A first embodiment of the present invention will be described.
A description will be given based on FIG. 9 (in each of the following embodiments,
The explanation will focus on the points that are different from the above-mentioned prerequisite cell structure,
The same parts are denoted by the same reference numerals or a part of the description is omitted. ). FIG. 9 is a front view schematically showing the relationship between the row electrode pairs of the PDP and the partition walls in the first embodiment.

In FIG. 9, a plurality of row electrode pairs (Xi, Yi) are provided on the back surface of a front glass substrate (not shown) which is a display surface.
Are arranged in parallel so as to extend in the row direction of the front glass substrate (left-right direction in FIG. 9).

The row electrode Xi has a protruding electrode portion Xai made of a transparent conductive film such as ITO formed in a T shape and having a wide portion and a narrow base end portion that face each other across the discharge gap g.
And the protruding electrode portion Xai extending in the row direction of the front glass substrate.
And an electrode body Xbj composed of a metal film connected to the narrow base end of the electrode.

Similarly, the row electrode Yi is also a protruding electrode portion Y formed of a transparent conductive film such as ITO formed in a T shape with a wide base portion and a narrow base end portion facing each other through the discharge gap g.
ai and an electrode body Ybj made of a metal film that extends in the row direction of the front glass substrate 10 and is connected to the narrow base end portion of the protruding electrode portion Yai.

The row electrodes Xi and Yi are arranged on the display line L arranged in the column direction (vertical direction in FIG. 9) of the front glass substrate.
In i, Li + 1 ..., the row electrodes Xi and Yi are (Yi, X
i), (Xi + 1, Yi + 1), etc., the arrangement is alternately switched for each display line.

The respective protruding electrode portions Xai and Yai arranged in parallel along the electrode main body portions Xbj and Ybj of the row electrodes Xi and Yi extend toward the row electrode side of the other pair forming the protruding electrode portion Xai. The top sides of the wide portions of Yai face each other with a discharge gap g having a required width.

With the above arrangement, the rows of the row electrode pairs (Yi, Xi) and (Xi + 1, Yi + 1) arranged back to back in the display lines Li, Li + 1 adjacent in the column direction. Transparent electrodes Xai of electrodes Xi and Xi + 1, respectively
And Xai + 1 are connected to a common electrode body Xbj.

The barrier ribs 25 defining the discharge space between the front glass substrate and the rear glass substrate (not shown) are vertical walls extending in the column direction at positions between the transparent electrodes Xai and Yai arranged in the row direction. 25a and electrode body Xb
a lateral wall 25b extending in the row direction at a position facing j,
Further, the horizontal electrodes 25b0 extending in the row direction are formed in a cross shape by the bus electrodes Ybj-1 and Ybj, which are located back to back between the display lines adjacent to each other in the column direction, and extend in the row direction.

Then, with the partition 25 in the shape of a cross,
The discharge space between the front glass substrate and the rear glass substrate has a pair of transparent electrodes Xa in each row electrode pair (Xi, Yi).
The discharge cells C1 having a rectangular shape are formed by being divided into portions facing i and Yai, respectively.

In the PDP of the first embodiment, the row electrodes Xi and Xi + 1 arranged back to back on the adjacent display lines share the electrode body Xbj, and the electrode body Xbj is installed. The area is smaller than the installation area of the electrode body portions Ybj-1 and Ybj which are separated from each other and arranged back to back.

Therefore, the width of the lateral wall 25b of the partition wall 25 facing the electrode body portion Xbj can be made smaller than the width of the lateral wall 25b0 facing the electrode body portions Ybj-1 and Ybj arranged back to back. Since the surface area of the phosphor layer formed in the discharge cell C1 can be increased by increasing the volume of the discharge cell C1, the brightness of the display image is increased.

Further, by sharing the electrode body Xbj, the discharge current to the row electrode Xi can be reduced.

In this example, the base end portions of the protruding electrode portions of the row electrodes Xi and Xi + 1 which are arranged back to back on the adjacent display lines are connected to each other so as to be integrally formed. Is also good.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 10 shows this second
It is a front view which shows typically the relationship between the row electrode pair and partition of PDP in an Example.

Similar to the PDP of the first embodiment of FIG. 9, the PDP of the second embodiment has row electrodes Xi1 and Yi1 in the display lines Li-11, Li1, Li + 11 ... Arranged in the column direction.
, (Yi-11, Xi-11), (Xi1, Yi1), (Yi + 11,
Xi + 11) ..., the display lines are alternately arranged and arranged.

With the above arrangement, in the display lines adjacent to each other in the column direction, the protruding electrode portions Xai-11 and Xai1 of the row electrodes Xi-11 and Xi1 arranged back to back with each other have a common electrode body. It is connected to the section Xbj1.

Further, in the display lines adjacent in the column direction, the row electrodes Yi1 are arranged back to back.
And Yi + 11, the protruding electrode portions Yai1 and Yai + 11 are connected to a common electrode body portion Ybj1.

As described above, the PDP in the second embodiment
In the adjacent display line, the row electrodes Xi1 and Xi + 11 arranged back to back share the electrode body Xbj1, and the row electrodes Yi2 and Yi + 12 arranged back to back are also electrode main bodies. Since the portion Ybj1 is shared, the installation area of the electrode body portions Xbj1 and Ybj1 becomes smaller than the installation area of the electrode body portion of the PDP of FIG.

Therefore, the width of the lateral wall 25b1 of the partition wall 251 facing the electrode body Ybj1 can be made smaller than that of the PDP of FIG. 9, and the volume of the discharge cell C11 can be increased by that much, and the width of the discharge cell C11 can be increased. Since the surface area of the formed phosphor layer can be further increased, the brightness of the displayed image is increased.

Further, the electrode body portions Xbj1 and Ybj1
, The discharge current to the row electrodes Xi and Yi can be reduced.

In this example, as shown in FIG. 11, in the adjacent display lines, the protruding electrode portions Xai-1 of the row electrodes Xi-11 and Xi1 arranged back to back with each other.
The base end portions of 1 and Xai1 are connected and integrally formed, and the base end portions of the protruding electrode portions Yai1 and Yai + 11 of the row electrodes Yi1 and Yi + 11 are connected and integrally formed. It may be formed.

[Brief description of drawings]

FIG. 1 is a front view schematically showing a conventional cell structure of a surface discharge type AC plasma display panel.

FIG. 2 is a sectional view taken along line VV of FIG.

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

FIG. 4 is a front view schematically showing a relationship between a row electrode pair and a partition having a cell structure which is a premise of the present invention.

5 is a cross-sectional view taken along line V1-V1 of FIG.

6 is a cross-sectional view taken along line V2-V2 of FIG.

7 is a cross-sectional view taken along line W1-W1 of FIG.

8 is a cross-sectional view taken along line W2-W2 of FIG.

FIG. 9 is a front view schematically showing the relationship between row electrode pairs and partition walls of the PDP in the first embodiment of the present invention.

FIG. 10 is a front view schematically showing the relationship between row electrode pairs and partition walls of a PDP in the second embodiment of the present invention.

FIG. 11 is a schematic diagram showing a modified example of the second embodiment of the present invention.

[Explanation of symbols]

10 ... Front glass substrate (front substrate) 11 ... Dielectric layer 11A ... Raised dielectric layer 12 ... Protective layer 13 ... Rear glass substrate (rear substrate) 14 ... Dielectric layers 15, 25, 251, ... Partition walls 15a, 25a ... Vertical Walls 15b, 25b, 25b0, 25b1 ... Horizontal wall 151 ... Black layer 152 ... White layer 16 ... Phosphor layers X, Xi, Xi1 ... Row electrodes (first
Row electrodes Y, Yi, Yi1 ... Row electrodes (second
Row electrodes) Xa, Xai, Xai1 ... Protruding electrode portions Ya, Yai, Yai1 ... Protruding electrode portions Xb, Xbj, Xbj1 ... Electrode body portions Yb, Ybj, Ybji ... Electrode body portions Xb1, Yb1 ... Black layers Xb2, Yb2. Color layer S ... Discharge space C, C1, C11 ... Discharge cell (unit light emitting region) g ... Gap r ... Gap L, Li, Lj1 ... Display line

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tatsuro Sakai             2680 Nishi Hanawa, Tatomi Town, Nakakoma District, Yamanashi Prefecture             Ionia Display Center (72) Inventor Kosuke Masuda             2680 Nishi Hanawa, Tatomi Town, Nakakoma District, Yamanashi Prefecture             Ionia Display Center F-term (reference) 5C040 FA04 GB03 GB14 GC02 GC03                       GC06 GF03 GF13 MA03 MA17

Claims (2)

[Claims] 1. A plurality of row electrode pairs, which extend in the row direction and are arranged in parallel in the column direction to form display lines, respectively, on a side of the front substrate which faces the back substrate via a discharge space, and the row electrode pairs. In the plasma display panel provided with the dielectric layer, a discharge space is provided for each unit light emitting region by the vertical wall portion extending between the front substrate and the rear substrate and extending in the column direction and the horizontal wall portion extending in the row direction. A partition wall formed in a row direction and a column direction, and a phosphor layer is formed on a lateral wall portion and a vertical wall portion of the partition wall facing the unit light emitting region of the discharge space, and a surface on the back substrate, and the row electrode pair A first row electrode and a second row electrode constituting the electrode main body portion formed of a metal layer extending in the row direction,
Each of the unit light emitting regions in the discharge space is provided with a protruding electrode portion formed of a transparent electrode film protruding from the electrode main body portion in the direction of another row electrode forming a pair and facing each other through a required discharge gap. And the positions of the first row electrodes and the second row electrodes forming the row electrode pairs in the column direction are alternately switched in the adjacent display lines, and the first row electrodes and the second row electrodes are arranged.
A plasma display panel, wherein protruding electrode portions which are back-to-back between two display lines adjacent to each other in the column direction of at least one of the row electrodes share the same electrode body portion. . 2. The plasma display panel according to claim 1, wherein the protruding electrode portion includes a wide portion facing each other through a discharge gap and a narrow base end portion connected to the electrode body portion.