JPH06251716A - Gas discharge panel - Google Patents

Abstract

PURPOSE:To facilitate film formation, and to drive multiple rows simultaneously by dividing a band-shape positive electrode into groups so that a drawing line of a specific group is provided covered under a barrier, and by increasing the brightness with the panel size remained the same as that of a conventional panel. CONSTITUTION:A transparent conductive film such as an ITO film or an SnO2 film is divided into four parts and formed on a front surface substrate 1, as band-shape electrode groups 211-21n, 221-22n, 231-23n, 241-24n. Drawing lines 311-31n, 321-32n, 331-33n, 341-34n, of positive electrode are formed. Barriers 4 for separating the positive electrode are formed by screen-printing black-color glass pastes of low melting point on the lines 321-32n, 331-33n so that the lines are covered thereby. A paste containing a red-color phosphor is screen-printed on the positive electrode, and a paste containing a green-color phosphor on the adjacent positive electrode, while a paste containing blue-color phosphor is screen-printed on the adjacent positive electrode, and a phosphor layer 5 is thus formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct current type gas discharge panel for displaying characters, figures and the like by utilizing light emission of gas discharge.

[0002]

2. Description of the Related Art In recent years, a gas discharge panel can be made thin, and since it is a flat type, there is no display distortion in the corners and the like, and because there is no flicker, eyes are less likely to tire, and harmful electromagnetic waves such as X-rays are emitted. It has been spotlighted and has been partially put into practical use because it has features such as no temperature and a wide operating temperature range.However, its relatively low brightness tends to increase the definition and size, especially when performing color display. Among them, when the number of cathodes, which are scanning lines, increases, the scanning time per line is shortened in the conventional driving method, and as a result, the emission time of one pixel is short,
Since a decrease in brightness is amplified, a method of driving a plurality of rows of scanning lines at the same time has been proposed for the purpose of improving brightness.

In the two-row simultaneous driving system, since the anodes, which are the column electrodes, may be vertically divided into two and drawn out, the conventional panel structure can be applied. However, when three or more rows are simultaneously driven, the back surface of the panel is changed. It is necessary to lead the column electrode lead wires from the middle portion and to shift the odd column and the even column by zigzag by shifting the odd cells by half cells.

However, in the former method, lead wires are provided on the back surface, which is complicated and difficult to realize in this method for mass production. In the latter case, the anode rows are formed in a zigzag pattern, and partition walls called barrier ribs are provided on both sides of the zigzag pattern. Naturally, these partition walls are also arranged in the zigzag pattern. However, it is inevitable that the printing accuracy will decrease. Moreover, although the even-numbered rows can be drawn out as they are, the anodes of the odd-numbered rows are drawn out between the anodes of the even-numbered rows, so that there is a drawback that at least the panel becomes large in the arrangement direction of the cathodes.

The present invention has been made in view of the above points, and it is easy to form a film, and the gas discharge panel capable of simultaneously driving 3 to 6 rows, which has a remarkable improvement in brightness while maintaining the conventional panel size. The purpose is to provide.

[0006]

DISCLOSURE OF THE INVENTION According to the present invention, a discharge space is formed by a front substrate having at least a plurality of parallel anodes, a back substrate having at least a plurality of strip cathodes, and a partition wall provided on the front substrate or the back substrate. In a gas discharge panel in which a plurality of discharge cells are formed by enclosing a gas in the space, the strip-shaped anode is divided into k groups (3 ≦ k ≦ 6), and the first group and the kth group are excluded. It is characterized in that the lead line of the group is provided so as to be hidden by the partition wall.

[0007]

A discharge space is formed by a front substrate having at least a plurality of parallel strip-shaped anodes, a back substrate having at least a plurality of strip cathodes, and a partition provided on the front substrate or the back substrate, and a gas is enclosed in the space. In the gas discharge panel in which a plurality of discharge cells are formed by dividing the strip-shaped anode into k groups (3 ≦ k ≦ 6), the lead lines of the groups except the first group and the k-th group are hidden by the partition walls. The strip-shaped anode is divided, and the first group and the k-th group of anodes on both ends of the strip-shaped anode are drawn out as usual, and the anodes of the groups excluding the first group and the k-th group are drawn out. Uses the partition walls arranged so as to separate the strip-shaped anodes on both sides thereof, and is arranged so as to be concealed by the partition walls.Therefore, there is no need to provide a place for arranging this lead wire, 3 rows to 6 with the same size as before
Rows can be driven simultaneously, and in the case of simultaneous driving of three rows, the anode is divided into three groups, and the first group and the third group are divided.
It suffices if the second group excluding the group is hidden by the partition walls, and in the case of simultaneous driving of four rows, the anode is divided into four groups, and the first group and the fourth group are divided.
The anodes of the second group and the third group, excluding the group, may be adversely affected by the partition wall, and in the case of simultaneous driving of five rows, the anodes are divided into five groups, and the first group and the fifth group are separated. It is sufficient to cause the partition walls to hide the two lead wires of the removed second and third anodes in an insulated state, and hide one lead wire of the fourth group of anodes to the partition wall.
In the case of row simultaneous driving, the anode is divided into 6 groups, and the lead wires 2 of the anodes of the 2nd group and the 3rd group except the 1st group and the 6th group.
It is only necessary that the book is insulated from the partition while being insulated, and the two lead wires of the fourth group and the fifth group are hidden from the partition. It is possible to reduce the width of the lead wire for 7 or more wires,
It becomes difficult to store it in the width of the partition wall, and it is possible to increase the panel size, but it is difficult to keep the conventional size, and further simultaneous driving requires a complicated drive circuit. It is not practical because it increases the space.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 is a schematic plan view showing a main part of a gas discharge panel according to a first embodiment of the present invention, FIGS. 2 and 3 are partially cutaway perspective views of the first embodiment, and FIG. 2 is a portion cut at a cathode 9 _m portion. FIG. 4 is a partially broken perspective view of the gas discharge panel according to the second embodiment of the present invention, and FIG. 3 is a partially broken perspective view of the cathode 9 _{m + 1} .

Example 1 A gas discharge panel having a trigger electrode and having an anode divided into four groups and provided on a front substrate will be exemplified.

As shown in FIGS. 1 to 3, this gas discharge panel has a first group of anodes 2 ₁₁ , 2 ₁₂ ... 2 _1n in the form of a strip on the front substrate 1 made of glass, and a second group of wide anodes. 2 ₂₁ , 2 ₂₂ ,
... 2 _2n , wide anodes of the third group 2 ₃₁ , 2 ₃₂ , ... 2
_3n , 4th group of anodes 2 ₄₁ , 2 ₄₂ , ... 2 _4n ITO
Film, a transparent conductive film such as a SnO ₂ film is divided into four parts by a method such as a sputtering method or a vapor deposition method, and then the lead wires 3 ₁₁ , 3 ₁₂ ... 3 _1n of the first group of anodes and the second group of anodes. lead wire 3 _21, 3 _22, · · · 3 _2n, lead line 3 ₃₁ of the third group of anodes, 3 ₃₂ · · · 3 _3n, lead line 3 ₄₁ of the fourth group of the anode, 3 ₄₂ ... 3 _4n is formed by screen-printing a black metal paste such as silver or nickel. Next, partition walls 4 for separating the anodes are provided on the lead lines 3 ₂₁ , 3 ₂₂ , ... 3 _{2n of} the second group of anodes and on the lead lines 3 ₃₁ , 3 _32, ... 3 _{3n of} the third group of anodes. Screen printing a black glass paste with a low melting point so as to obscure the leader line, screen printing a paste containing a phosphor that emits red color on the anode, and green color on the adjacent strip-shaped anode A paste containing a phosphor is screen-printed, and a paste containing a phosphor that emits a blue color is sequentially screen-printed on each adjacent anode to form a phosphor layer 5.

On the rear substrate 6 made of glass or the like, the trigger electrode 7 is formed by screen-printing a silver paste on the entire surface and firing, and the insulating layer 8 is formed on the entire surface by screen-printing a low-melting glass paste. After that, a paste containing nickel as a main component is overprinted by a screen printing method to form cathodes 9 _{1 to} 9 _m (three-dimensionally orthogonal to the first group of anodes), 9 _{m + 1 to} 92 _m (first sterically orthogonal to two groups of anode), 9 _{2m +} sterically orthogonal to ₁ to 9 _3m (third group of _{anodes), 9 3m + 1 ~9 4m} ( sterically the fourth group of anode Orthogonal).

Thereafter, the front substrate and the rear substrate are superposed and sealed, and a gas having a predetermined gas pressure, for example He (97), is filled in the space.
%) And Xe (3%) are sealed at a pressure of 200 Torr to complete the gas discharge panel.

A driving circuit is connected to the gas discharge panel thus obtained, and a cathode that is three-dimensionally orthogonal to the anodes of the first group, a cathode that is three-dimensionally orthogonal to the anodes of the second group, and a cathode of the third group. A cathode that is three-dimensionally orthogonal to the anode and a cathode that is three-dimensionally orthogonal to the fourth group of anodes are simultaneously scanned. That is, 9 ₁ ,
The cathodes of 4 rows of 9 _{m + 1} , 9 _{2m + 1} , 9 _{3m + 1} are simultaneously turned on, and if there is a point to be displayed in this row, the anode corresponding to that point is turned on at the same time, and the selected cell is selected. Discharges. Next, the cathodes of 9 ₂ , 9 _{m + 2} , 9 _{2m + 2} , and 9 _{3m + 2} are turned on at the same time, and if there is a point to be displayed in this row, the anodes corresponding to that point are turned on at the same time and selected. The discharged cells discharge. Hereafter, 4 rows are selected in order, 9 _m , 9 _{2 m} , 9
_{After 3 m} and _{94 m are} selected, one cycle is performed, and then this scanning is repeated to display at high brightness.

Example 2 A gas discharge panel in which the anode is divided into three groups and provided on the front substrate as shown in FIG. 4 is illustrated.

In this gas discharge panel, a front substrate 1 made of glass or the like has a strip-shaped first group of anodes 2 ₁₁ , 2 ₁₂ ... 2 _1n , a second group.
Anodes 2 ₂₁ , 2 ₂₂ ... 2 _2n , third of which a part of the group is wide
Group anodes 2 ₃₁ , 2 ₃₂ ... 2 _3n ITO, SnO
A transparent conductive film such as _two films is formed by dividing into three parts by a method such as a sputtering method or a vapor deposition method, and then lead wires 3 ₁₁ , 3 ₁₂ ... 3 _1n for the first group of anodes, and lead wires for the second group of anodes. 3 ₂₁ , 3 ₂₂ ... 3 _2n and lead lines 3 ₃₁ , 3 ₃₂ ... 3 _3n of the third group of anodes are formed by screen-printing a black metal paste such as silver or nickel. Then the partition walls 4 of the second group of anode lead wire 3 ₂₁ to separate the anode, 3 _22, a glass paste having a low melting point black to Komohei these lead lines on · · · 3 _2n screen printing In addition, a paste containing nickel as a main component is overprinted on the back substrate by screen printing to form cathodes 9 _{1 to} 9 _m (three-dimensionally orthogonal to the first group of anodes), 9 _{m + 1} to 9 _2m (sterically perpendicular to the anode of the second group), is the same configuration as example 1 except for forming a 9 _{2m + 1} ~9 _3m (sterically perpendicular to the third group of anodes).

In the gas discharge panel thus obtained,
A drive circuit is connected to the anode of the first group, which is three-dimensionally orthogonal to the anode.
Poles, cathodes that are three-dimensionally orthogonal to the second group of anodes, and third group of anodes
The cathodes that are three-dimensionally orthogonal to the poles are simultaneously scanned. Sanawa
C, 9₁, 9_{m + 1}, 9_{2m + 1}3 rows of cathodes are turned on at the same time
If there is a point to be displayed in this line, it corresponds to that point
The anodes are turned on at the same time and the selected cells discharge.
Then 9₂, 9_{m + 2}, 9 _{2m + 2}The three rows of cathodes are turned on at the same time.
If there is a point to be displayed in this line, it corresponds to that point.
The anodes are turned on at the same time and the selected cell discharges.
U After that, 4 lines are selected in order, and 9 lines are selected._m, 9_2m, 9_3m
It is selected until one cycle, then repeats this scanning
Display is performed in degrees.

The preferred embodiments have been described above, but the present invention is not limited to these, and various applications are possible. Regarding the structure of the discharge panel, regardless of the presence or absence of display discharge, which does not have a trigger electrode, the minute charge accumulated by the stray capacitance between the anode and cathode in the panel is always scanned as a pilot discharge, and the In addition, it can be applied to a so-called seed-fire discharge type panel in which the discharge current is increased to spread the discharge to the entire discharge space.

The lead line may be branched from the straight portion at a right angle and connected to the strip-shaped anodes having the same width, but the lead line may be formed by the screen printing method. Is preferable because it is easy to form a film. In this case, it is difficult to form a film if there is a branched portion other than the linear portion. It is preferable that at least a part of the anode except for is formed wide and connected to this wide portion. Alternatively, an ITO film, gold, aluminum, chromium, or the like can be formed by a sputtering method. In this case, if a film made of the same material as the anode is used, it can be formed simultaneously with the anode.

Although the color display panel has been described in the embodiment, it is needless to say that the present invention can be applied to a monochrome display panel having no phosphor. Further, the monochromatic gas discharge panel for displaying green may be used by changing the phosphor that emits the three primary colors in Example 1 to a phosphor that emits green.

With respect to the partition wall, the strip-shaped anode is separated,
It is necessary to form the discharge space, and in the examples, all of the examples have been described on the front substrate, but when formed by screen-printing with a paste containing a black pigment, it acts to partition the cells. It is preferable because it has a black matrix effect.

In addition to the transparent electrode, the anode may be opaque such as black if it is placed in contact with or close to the partition wall so as to secure a transparent opening in the cell. In this case, A conductive paste such as silver can be used, and it is effective in screen printing at the same time as the lead line.

For the cathode, a metal conductor such as aluminum or an oxide conductor having a perovskite structure can be used as a matter of course.

[0023]

The gas discharge panel of the present invention has a strip anode.
The partition lines are divided into groups (3 ≦ k ≦ 6), and the leader lines of the groups other than the first group and the k-th group are provided so as to be hidden by the partition walls. The production of the panel is extremely easy.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a main part of a gas discharge panel according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view taken along a 9 _m portion of the cathode in Example 1.

FIG. 3 is a partially cutaway perspective view taken along a cathode 9 _{m + 1} portion in Example 1.

FIG. 4 is a schematic plan view showing a main part of a gas discharge panel according to a second embodiment of the present invention.

[Explanation of symbols]

1 Front substrate 2 _{11 to} 2 _4n Anode 3 _{11 to} 3 _4n Lead wire 4 Partition wall 5 Phosphor layer 6 Rear substrate 7 Trigger electrode 8 Insulating layer 9 _{1 to} 9 _4m Cathode

Claims (1)

[Claims] 1. A discharge space is formed by a front substrate having at least a plurality of parallel ribbon-shaped anodes, a rear substrate having at least a plurality of strip-shaped cathodes, and partition walls provided on the front substrate or the rear substrate, and a gas is provided in the space. In a gas discharge panel in which a plurality of discharge cells are enclosed by dividing the strip-shaped anode into k groups (3 ≦ k ≦ 6), and the lead lines of the groups excluding the first group and the k-th group are the partition walls. A gas discharge panel, which is provided so as to be concealed by a gas discharge panel.