JPH08185804A - Gas discharge type display device - Google Patents

Abstract

PURPOSE: To provide a gas discharge type display device in which a seam or the like is not seen in external appearance and on which beautiful and colorful information can be displayed. CONSTITUTION: A first back face plate 3a and a second back face plate 3b are arranged on a front face plate 1 by butting the opening end 13a of the first back face plate 3a and the opening end 13b of the second back face plate 3b against each other so that the first electrode wire 2 of the front face plate 1 and discharge cells 6 of the back face plates are opposed to each other. Its connecting parts are airtightly and firmly joined and sealed by sealing materials 7, and discharge gas mainly composed of noble gas such as Xe, Kr and He is sealed inside discharge cells 6a and 6b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge type display device for displaying characters and images by utilizing gas discharge, and more particularly to a large size gas discharge type display device for information transmission used outdoors or indoors.

[0002]

2. Description of the Related Art In recent years, with the progress of information-oriented society, many kinds of display devices, which are one of the information transmission means, have been adopted and are widely used according to their uses and purposes. The range of applications is extremely wide, such as display devices used in public facilities such as stations and airports, advertisements on outer walls of buildings, baseball fields, etc., or displays for introducing products in show windows indoors.

The display means has also changed from a conventional static type such as subtitles and flaps to a dynamic type (graphic display or type in which characters flow) whose information content changes with the passage of time. There is. Light bulbs have been used for these early years, but they have problems such as short life and high power consumption.In such circumstances, as an alternative to light bulbs, displays using light emitting diodes or liquid crystals are used. Devices and display devices using plasma have appeared.

Above all, a display device using plasma, so-called gas discharge (plasma display panel, hereinafter referred to as PDP)
Is used for information terminals such as portable computers as flat display devices, and its application field is expanding due to its clear display and wider viewing angle than liquid crystal panels. Further, recently, the colorization technology has made remarkable progress, and various kinds of information can be displayed, and it has been in the spotlight in the television field as a thin display device which partially replaces a video tube. Generally, a PDP for color display is provided with a cathode, an anode, and a phosphor on the inner surfaces of two flat glass plates facing each other, hermetically sealing the surroundings, and an X discharge in an internal discharge cell.
A rare gas such as e, Kr, or He is sealed, and a predetermined voltage is applied between the electrodes to generate plasma discharge,
Ultraviolet rays generated at this time are applied to a phosphor to convert it into visible light of red, blue, and green for image display. Since such a PDP is a self-luminous type, it has excellent characteristics such as a wide viewing angle and a high contrast ratio, which makes it brighter, easier to see, and has a faster response speed than liquid crystals.

Next, the structure of an example of a general DC type PDP will be described with reference to FIGS. FIG. 9 is an enlarged perspective view of a part of the PDP, and FIG. 10 is a sectional view showing the outline of the assembly structure.

As shown in the figure, the DC PDP is formed on a group of first electrode wires 2 formed on a front plate 1 having glass or the like as a substrate and on a rear plate 3 also having glass or the like as a substrate. A group of the second electrode lines 4 are arranged so as to be orthogonal to each other and face each other with the barrier rib 5 interposed therebetween, and a large number of discharge cells 6 are formed in a matrix at the intersections thereof. The front plate 1 and the rear plate 3 combined with each other are surrounded by a sealing material 7 such as low melting point glass, and a discharge gas mainly containing a rare gas is sealed inside.

A display electrode body 8 is installed on the back plate 3 side of each discharge cell 6 and is connected to a second electrode wire 4 formed so as to be orthogonal to the first electrode wire 2, The electrode body 8 and the first electrode wire 2 form a pair of discharge electrodes. Therefore, the first electrode wire 2 or the display electrode body 8 serves as a cathode or an anode of the discharge electrode, and the second electrode wire 4 functions as a cathode bus bar or an anode bus bar with respect to the display electrode body 8. A phosphor 9 is applied to the back plate 3 except for the display electrode body 8. Also, in the front plate 1, the first
The portion other than the electrode wire 2 is transparent, and the surface of the phosphor 9 can be directly observed through the discharge cell 6. Each of the electrode lines 2 and 4, the display electrode body 8, the phosphor 9, the partition wall 5 and the like are formed on a glass plate using a thick film printing technique, and can be manufactured at extremely low cost.

The operation of the above arrangement will be described below. In FIG. 9, when a voltage is applied to a set arbitrarily selected from the first electrode line 2 and the second electrode line 4, the first electrode line 2 and the display electrode 2 in the discharge cell 6 at the intersection position. Display discharge occurs between the body 8 and the body 8. By sequentially applying this voltage through a plurality of formed electrode body pairs, discharge is generated in the discharge cells 6 arranged in the entire display device, and an arbitrary pattern emits light to operate as a display device. . In the case of color display, for example, ultraviolet rays emitted by mainly using xenon as a discharge gas are used for the phosphor 9
Used to excite.

In this way, a general DC type PDP can display information such as images and characters. However, as can be seen from the above structure, it is necessary to manufacture a large PDP.
In particular, it is extremely difficult to form a large number of partition walls 5 on a large-sized glass substrate in a perfect state, and the yield thereof deteriorates as the size increases, which causes a cost increase.

Therefore, in order to increase the size of the display device and to further increase the amount of information displayed and the display content, the conventional large-sized gas discharge type display device has individual components as shown in FIGS. 11 (a) and 11 (b). Independent small and easy to make PDP
By connecting 10a, 10b, and 10c, the size is increased, and it is used as one display device.

[0011]

However, in the conventional large-sized gas discharge display device described above, a plurality of PDs are used.
As shown in FIG. 11, since P is connected and used,
The problem that the connection part 11 appears on the front surface of the display device and that the non-display area 12 is formed in the connection part because the individual PDPs 10a, 10b, 10c are connected, which causes deterioration of the display quality of information. was there.

The present invention solves the above-mentioned problems.
It is an object of the present invention to provide a gas discharge type display device having a beautiful display surface in which no breaks or the like are generated in the display information of the display device which is made large and the connecting portion or the like is not visible in appearance.

[0013]

In order to achieve the above object, the present invention provides a front plate having a first electrode wire group, and a second plate.
Group of electrode lines and a display electrode body connected to the second electrode line thereof and a back plate provided with a phosphor are held opposite to each other by a partition wall, and a rare gas is enclosed in a discharge cell formed therein. A gas discharge type display device as described above, which is configured by disposing a plurality of back plates with respect to one front plate.

[0014]

Therefore, according to the present invention, since a plurality of back plates prepared in advance can be connected to one front plate while being combined, the front plate for displaying characters and images can be joined to the front plate. It is possible to eliminate a non-display area and the like, and it is possible to obtain a particularly large-sized gas discharge display device which is extremely excellent in display quality. In addition, the manufacturing cost of the large back plate can be reduced because it is possible to form partition walls, which had a poor product yield when manufacturing a large back plate, with a back plate of a size that can obtain an appropriate yield. Becomes

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A gas discharge type display device according to an embodiment of the present invention will be described below with reference to FIGS. In these figures, the same reference numerals are given to the components corresponding to those shown in FIGS.

FIG. 1 shows a first embodiment of the present invention, (a) is a front view thereof, and (b) is a sectional view as seen from the top. As shown in FIG. 2, the structure is such that the group of the first electrode wires 2 is formed on the inner surface side of the front plate 1 made of a transparent glass plate or the like.

Further, FIG. 3 shows partition walls 5 provided in a mesh pattern.
The first rear plate 3a on which the discharge cells 6a formed in a matrix by a and the group of the second electrode lines 4a for applying a voltage to the discharge cells 6a are formed, and the partition wall 5 as well.
2b, the discharge cell 6b, the second rear electrode plate 4b and other groups of the second electrode plate 4b are shown from the inner surface side. The display electrode body and the phosphor are not shown in FIG.

As shown in the figure, the first back plate 3a and the second back plate 3b are provided with open ends 13a and 13b, respectively, having partition walls 5a and 5b as connecting end faces at their connecting portions.
When assembling the display panel, the first back plate 3a and the second back plate 3b are placed on the front plate 1 shown in FIG. 2, and the first electrode wire 2 of the front plate 1 and the discharge cell 6 of the back plate face each other. like,
The opening end 13a of the first back plate 3a and the opening end 13b of the second back plate 3b are arranged so as to abut against each other, and the connecting portion is airtightly and firmly joined and sealed by the sealing material 7. Then, a discharge gas mainly containing a rare gas such as Xe, Kr and He is enclosed in the discharge cells 6a and 6b to form a PDP.

Next, a second embodiment of the present invention will be described. FIG. 4 shows a rear plate divided into three parts according to the second embodiment of the present invention, in which discharge cells 6a are formed in a matrix by partition walls 5a provided in a mesh pattern.
And a group of second electrode lines 4a for applying a voltage to the discharge cell (a display electrode body and a phosphor are omitted in this figure), a first back plate 3a, a partition 5b, and a discharge cell. 6b, a second back plate 3b having a group of second electrode wires 4b, and the like, and a partition wall 5c, a discharge cell 6c, and a partition wall 5c for arranging between the first back plate 3a and the second back plate 3b. A group of second electrode wires 4c and an open end 13 of the first back plate 3a
a, a third back plate 3c having two open ends 13c which are respectively connected to the open ends 13b of the second back plate 3b.
When the panel is assembled, the front plate 1 shown in FIG.
a, the second back plate 3b and the third back plate 3c and the opening end 13a of the first back plate 3a so that the first electrode wire 2 of the front plate 1 and the discharge cell 6 of the back plate face each other. The one open end 13c of the third back plate 3c and the second back plate 3
b and the other open end 13 of the third back plate 3c.
and c are arranged to face each other, and the connecting portion is hermetically and firmly sealed with the sealing material 7.

FIG. 5A shows a PD manufactured by the above method.
It is a front view of P, and similarly (b) is a sectional view seen from the upper surface. Front plate 1, first back plate 3a, second back plate 3
b and the third back plate 3c are firmly joined by the sealing material 7, and X is formed inside the discharge cells 6a, 6b and 6c.
A display gas is formed by filling a discharge gas mainly containing a rare gas such as e, Kr, or He. The back plate of the PDP in the second embodiment is not limited to three divisions, but may be composed of a plurality of divisions of four or more divisions according to the length of the front plate 1.

Next, a third embodiment of the present invention will be described.
I do. FIG. 6 is divided into 6 in the third embodiment of the present invention.
It shows the back plate, and is a partition wall provided in a mesh pattern.
5a ₁Discharge cells 6 formed in a matrix by
a₁And a second electrode wire 4a for applying a voltage to the discharge cell₁
And a group of (the display electrode body and the phosphor are
Omitted) The first back plate 3a₁And the partition wall 5b₁,
Discharge cell 6b₁, The second electrode wire 4b₁Second with a group of
Back plate 3b₁And the first back plate 3a₁And the second back plate 3
b₁Similarly partition wall 5c for arranging between₁, Discharge cell
6c₁, The second electrode wire 4c₁Third back plate 3 with a group of
c₁And the partition wall 5a₂, Discharge cell 6a₂, The second electrode
Line 4a₂Fourth back plate 3a including a group of₂And likewise
Wall 5b₂, Discharge cell 6b₂, The second electrode wire 4b₂A group of
Fifth back plate 3b provided₂And the fourth back plate 3a₂And the fifth
Back plate 3b₂Also a partition 5 for placement between and
c ₂, Discharge cell 6c₂, The second electrode wire 4c₂With a group of
6th back plate 3c₂Consisting of 6 back plates
Is. Therefore, the six rear plates 3a in this embodiment are
₁, 3b₁, 3c₁, 3a₂, 3b₂And 3c₂Is the front plate
Aperture for connecting each when combined with 1.
Edge, that is, the first back plate 3a₁To 13a₁And 14
a₁, The second back plate 3b₁To 13b₁And 14b₁, The third
Back plate 3c₁There are two 13c₁And 14c₁The fourth back
Board 3a₂To 13a₂And 14a₂, Fifth back plate 3b₂To
13b₂And 14b₂And the sixth back plate 3c₂There are two
13c₂And 14c₂Are provided respectively, and the panel
When assembling, the discharge cell on the first electrode wire 2 of the front plate 1
Six back plates 3 so that the surfaces on which 6 etc. are formed face each other.
a₁, 3b₁, 3c₁, 3a₂, 3b₂And 3c₂Open above
The mouth ends are placed in abutment with each other, and the connecting portion is sealed with a sealing material 7
Therefore, it is hermetically and firmly sealed.

FIG. 7A shows a PD manufactured by the above method.
It is a front view of P, and similarly (b) is a view seen from the upper surface. Front plate 1 and first back plate 3a ₁ , second back plate 3
b _1, third back plate 3c _1, the fourth of the back plate 3a _2, after being firmly joined by the fifth rear plate 3b ₂ and sixth back plate 3c ₂ is sealant 7, the discharge cells 6a ₁ , 6b ₁ , 6c
Xe, Kr and H are present inside ₁ , 6a ₂ , 6b ₂ and 6c _2.
A display gas is formed by filling a discharge gas mainly containing a rare gas such as e.

Incidentally, the PDP in the third embodiment described above.
The rear plate is not limited to six divisions, but depending on the size and shape of the front plate 1, six or more divisions can be used as long as external drawing means for the second electrode wire 4 formed on the rear plate is provided. It is also possible to constitute by a plurality of back plates.

Next, a fourth embodiment of the present invention will be described. 8 (a) and 8 (b) are a front view and a top sectional view showing a wide type PDP configured by connecting two PDPs according to the second embodiment of the present invention in the lateral direction.

As shown in the figure, in the wide type PDP of this embodiment, the joint 15 is exposed at the connecting portion of the two panels. However, by connecting the conventional PDP, the wide type PDP as in the present embodiment. In the case of constructing the display device, as apparent from the figure, five seams will appear on the front display panel, and in comparison with this, the display quality of the PDP according to the present invention is superior. it is obvious.

As described above, according to the above-described embodiment, a large back plate in which it is extremely difficult to form a partition for one front plate is divided into a plurality of small back plates that are easy to make, and is manufactured. When assembling the display panel, the PDP can be constructed by arranging a plurality of back plates while facing each other with a large front plate that is relatively easy to manufacture. Since it is possible to eliminate the occurrence of seams and non-display areas and to suppress the seams and the like to a minimum, it is possible to display a variety of information with a very large amount of information in a beautiful and natural manner.

[0027]

The present invention comprises a front plate having a first group of electrode lines, a second group of electrode lines and a display electrode body and a phosphor respectively connected to the second group of electrode lines. A gas discharge display device in which a rear plate and a rear plate are opposed to each other by a partition wall, and a rare gas is enclosed in discharge cells formed therein, and the rear plate has a plurality of front plates. Since it is composed of the back plate of the display, it does not create joints or non-display areas on the front plate that displays information such as images and characters, and displays a variety of information with excellent display quality in a natural state. can do.

[Brief description of drawings]

FIG. 1A is a front view of a gas discharge display device according to a first embodiment of the present invention, and FIG. 1B is a sectional view of the gas discharge display device.

FIG. 2 is a front view of an inner surface of a front plate that constitutes a gas discharge display device according to an embodiment of the present invention.

FIG. 3 is a front view of an inner surface of a back plate which constitutes the gas discharge display device according to the first embodiment of the present invention.

FIG. 4 is a front view of an inner surface of a back plate which constitutes a gas discharge display device according to a second embodiment of the present invention.

FIG. 5A is a front view of a gas discharge display device according to a second embodiment of the present invention, and FIG. 5B is a sectional view of the gas discharge display device.

FIG. 6 is a front view of an inner surface of a back plate which constitutes a gas discharge display device according to a third embodiment of the present invention.

FIG. 7A is a front view of a gas discharge display device according to a third embodiment of the present invention, and FIG. 7B is a sectional view of the same gas discharge display device.

FIG. 8A is a front view of a gas discharge display device according to a fourth embodiment of the present invention, and FIG. 8B is a sectional view of the gas discharge display device.

FIG. 9 is a partially cutaway perspective view of a general gas discharge display device.

FIG. 10 is a sectional view of the gas discharge display device.

11A is a front view of a conventional gas discharge display device, and FIG. 11B is a cross-sectional view of the same gas discharge display device.

[Explanation of symbols]

 1 Front Plate 2 First Electrode Wire 3a First Back Plate 3b Second Back Plate 4a, 4b Second Electrode Wire 5a, 5b Partition 6a, 6b Discharge Cell

Claims (2)

[Claims] 1. A front plate having a first group of electrode lines, a rear plate having a second group of electrode lines and display electrode bodies respectively connected to the second electrode lines, and a phosphor. Are opposed to each other by barrier ribs, and a rare gas is enclosed in discharge cells formed therein, wherein a plurality of back plates are arranged with respect to the one front plate. Gas discharge type display device configured. 2. A gas discharge type display device comprising a plurality of the gas discharge type display device according to claim 1 connected to each other.