JP3234028B2 - Gas discharge display panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge display panel which is a self-luminous flat panel display using gas discharge, and more particularly, to a gas discharge display panel comprising a back plate and a front plate.
The present invention relates to a gas discharge display panel for a pulse memory drive system having a body structure.

[0002]

2. Description of the Related Art A pulse memory driving system for a gas discharge display panel (see, for example, Japanese Patent Application Laid-Open No. 57-86886).
Is a very effective means for obtaining a high-brightness flat display device because a panel can have a memory function with a relatively simple configuration. Panels having the configuration shown in FIGS. 13 and 14 are known as panels in which this driving method is employed and current limiting resistors are arranged in series for each display cell (Television Society Annual Meeting). , 4-7,
1990, Takano et al., "Pulse Memory Drive of Discharge Display Panel with Resistor").

As shown in FIG. 1, this panel is composed of a back plate RP and a front plate FP. On the back plate RP, a display anode bus DAL and a display via a resistor R connected to these buses are shown. The anode DA, the display anode bus DAL and the white glass back WB covering the resistor R, the auxiliary anode SA, and the bank B are sequentially formed by a method such as thick film printing. On the other hand, the front plate FP
A cathode bus KL, a display cathode DK, and an auxiliary cathode SK are also formed thereon by a printing technique or the like. The two substrates are sealed around with a sealing material and exhausted, and then a certain amount of gas is sealed. And as can be seen from FIG.
The resistor R is L-shaped in order to obtain the highest possible resistance value within a limited area. As can be seen from FIG. 14, a part of the bank B between the display cell DC and the auxiliary cell SC is lower than the other part, and
A path (priming slit PS) for diffusing charged particles and metastable particles from the auxiliary discharge of the display cell DC is formed.
It is devised to start the discharge in a short time stably. When colorization is performed, a predetermined phosphor is applied to a portion of the back plate RP other than the display anode DA and the inside of the bank B.

[0004]

In the panel described in the prior art, the resistor R has the function of limiting the discharge current, reducing the spatter of the display cathode DK, and suppressing the luminance deterioration and malfunction caused by the spatter. In order to obtain this function sufficiently, the resistance value of the resistor R needs to be as high as about 1 MΩ. Although the average pitch of the display cells DC is 0.7 mm, the pitch of the display cells DC needs to be further reduced in order to use this panel as a television display device or an OA terminal device. However, when the pitch of the display cells DC is reduced, the area of the display cells DC is reduced, and the area for disposing the resistor R on the back plate RP is reduced. Therefore, it is necessary to form the resistor R using a high-resistance material in order to obtain a desired resistance value.

Normally, the resistor R is formed by using a thick film printing technique. In the printing process, a shift between the display anode bus DAL and the resistor R, a shift between the display anode DA and the resistor R, a change in the shape of the resistor R, and a change in the resistance R are caused. And these phenomena appear as variations in the resistance value. This variation in resistance value increases as the shape of the resistor R decreases and as the resistance value of the material used for the resistor R increases.
Variations in the resistance value result in variations in panel luminance and discharge start voltage, deteriorating the display quality and operation margin of the panel. In particular, as the size of the panel increases, the printing conditions become more severe, and the variation in the resistance value of the resistor R increases.

Therefore, when the pitch of the display cells DC is reduced, the shape of the resistor R becomes smaller, and the material of the resistor R becomes higher resistance, so that it becomes difficult to control the variation of the resistance value. The quality and the operating voltage margin cannot be obtained. Further, the display cell DC
Is smaller, the area for disposing the resistor R becomes too small, and the resistor R cannot be disposed.

An object of the present invention is to provide a gas discharge display panel in which the above-mentioned drawbacks are ameliorated and the variation in resistance value is small even at a minute cell pitch, and a high-resistance resistor can be formed stably.

[0008]

In order to achieve the above object, the present invention relates to a gas discharge display panel having a two-body structure comprising a back plate and a front plate. The buses are arranged in rows , one end is connected to each anode bus, and each anode bus and its
The anodes are connected to the other ends of the resistors arranged in parallel with each other, and a discharge cell is formed by each anode and a bank surrounding the anode, and the discharge cells are orthogonal to the anode bus.
Arrange the resistors in a staggered pattern for each row, and
It is arranged so as to be located at the lower part of the hand, and a plurality of cathodes are arranged on each of the rows of discharge cells orthogonally to the anode bus on the front plate.

[0009] Then, it is preferable to be arranged parallel to the cathode on the front plate so as an auxiliary electrode covered with an insulating layer.

Further, the anode bus may be a cathode bus, the anode may be a cathode, and the cathode may be an anode.

[0011]

In the gas discharge display panel of the present invention having the above-described structure, the display cells are arranged in a staggered manner, and the location of the current limiting resistor is not limited to the inside of the display cell but is located in an adjacent row .
The resistance is relatively long even if the pitch of the display cells is reduced. For this reason, it is necessary to reduce the influences of the factors that increase the variation in the resistance value generated when forming the resistor, such as the printing deviation, the change in the shape of the resistor, and the variation in the thickness of the resistor when using the thick film printing technique. Thus, variation in resistance value can be reduced. In addition, a high-resistance resistor can be formed from a relatively low-resistance material having stable characteristics.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[0013] Figure 1 is an exploded plan view showing the structure of a first embodiment of a gas discharge display panel according to the present invention, E ₁ in FIG. 2 FIG. 1
-E ₂ sectional view, FIG. 3 is a F ₁ -F ₂ cross-sectional view of FIG.

The panel has a two-body structure including a back plate RP and a front plate FP. On the back plate RP, the anode buses AL for connecting the anode A and the driving elements are arranged in a line. A plurality are arranged in parallel with each other. The top of each anode busbar AL are arranged in parallel to the resistor R and the anode bus AL via the insulating layer DL _1, the resistor R is an anode the end generatrix AL
And the other end is connected to the anode A. Also,
Resistor R is covered with an insulating layer DL ₂ in the portion other than the anode A. Further, a bank B is provided so as to surround each of the anodes A, and the discharge cells C are defined by the banks B. The discharge cells C are arranged in a staggered manner in each row orthogonal to the anode bus AL as shown in the figure. On the other hand, on the front plate FP, a plurality of cathodes K are arranged in each row of the discharge cells C orthogonal to the anode bus AL, and an auxiliary electrode T covered with an insulating layer DL is provided in parallel with the cathode K. It is provided on the bank B of one row.

The above panel is formed in the following procedure. First, the anode A is placed on a back plate RP made of a glass plate or the like.
An anode bus AL is formed by thick-film printing or thin-film technology for connecting the driving element and the driving element. Except for the via hole BH for connecting to the resistor R, an anode bus AL is formed thereon by thick-film printing such as an insulating paste. and the first insulating layer is covered with DL ₁ was the resistance R thereon formed in such a thick film printing, connecting the anode bus AL and resistor R through hole BH. Also, the anode A is formed by thick film printing or thin film technology so as to be connected to the other end of the resistor R. Further, the resistor R is covered by a _second insulating layer DL2 formed by printing a thick film such as an insulating paste. Thereafter, a bank B is formed so as to surround the anode A by thick-film printing of an insulating paste or the like. Here, the resistor R is buried in the lower part of the bank B located in the adjacent row as shown in the drawing so that the length can be made as long as possible.

On the other hand, a front plate FP made of a glass plate or the like
The cathode K and the auxiliary electrode T are formed by thick film printing or thin film technology so as to be orthogonal to the anode bus bar AL, and then the insulating layer DL is formed by thick film printing such as glass paste.
To cover the auxiliary electrode T. Overlap the above two substrates,
After the periphery is sealed with a sealing material and exhausted, one or more kinds of rare gases or the like are sealed.

For forming the resistor R, various resistor pastes and thin film resistors can be used, but a ruthenium-based resistor paste is excellent in characteristics. As the cathode material, in addition to metal materials such as Ni and Al, oxides such as ZnO can be used. Also,
The auxiliary electrode T may be made of a transparent electrode such as ITO (indium or tin oxide), and when it is necessary to lower the resistance value, the bus may be formed of a material having a low conductivity. Further, it is preferable that the insulating layer DL of the front plate FP is transparent.
The entire P may be covered with the insulating layer DL. In the patterning of the electrode, the resistor, the insulating layer, and the bank, a printing technique, a photoetching method, a sandblasting method, and the like can be used.

The method of driving the panel having the above configuration is basically described in JP-A-60-194495 and JP-A-61-61495.
This is a driving method according to JP-A-212896. That is, an auxiliary discharge is once generated between the auxiliary electrode T and the cathode K or the anode A in all or a part of the discharge cells C, and when the priming condition for writing becomes the best after a certain time, the anode A and the anode A are connected. After the address discharge is generated between the cathodes K, the pulse discharge is continued by the sustain pulse applied between the anode A and the cathode K.

[0019] Figure 4 is an exploded plan view showing the structure of a second embodiment of the gas discharge display panel according to the present invention, G ₁ in FIG. 5 FIG. 4
-G ₂ sectional view, FIG. 6 is H ₁ -H ₂ cross-sectional view of FIG.

The panel of the second embodiment has a structure in which the auxiliary electrode T is disposed below the cathode K in the panel of the first embodiment. Specifically, after forming the auxiliary electrode T on the front plate FP and covering the auxiliary electrode T with the insulating layer DL, the cathode K is formed thereon. The panel is basically the first
It is made in the same manner as in the embodiment. In this panel, the auxiliary electrode T and the cathode K are close to each other, so that the auxiliary discharge between the auxiliary electrode T and the cathode K is easily performed.

[0021] Figure 7 is an exploded plan view showing the structure of a third embodiment of the gas discharge display panel according to the present invention, FIG 8 is I ₁ in FIG. 7
-I ₂ sectional view, FIG. 9 is a J ₁ -J ₂ cross-sectional view of FIG.

The panel of the third embodiment has a structure in which the resistor R is arranged below the anode bus AL in the panel of the second embodiment. Specifically, after forming the resistor R on the back plate RP and forming the anode A to connect to the resistor R, except for the via hole BH for connecting the anode bus AL and the resistor R, It is covered with a _first insulating layer DL1. An anode bus AL is formed thereon and connected to the resistor R. Further, anode bus AL is covered with _second insulating layer DL2. The structures on the bank B and the front plate FP are made in the same manner as in the second embodiment.

FIG. 10 is an exploded plan view showing the structure of a fourth embodiment of the gas discharge display panel according to the present invention, and FIG.
12 is a sectional view taken along line L ₁ -L ₂ , and FIG. 12 is a sectional view taken along line M ₁ -M _{2 in} FIG.

The panel of the fourth embodiment has a structure in which the resistor R and the anode bus AL are arranged on the same plane.
Specifically, a resistor R is formed on the rear plate RP,
Is connected to the anode A at one end and the anode bus bar AL is connected to the other end. After that, the resistance R and the anode bus AL are covered with the insulating layer DL. The structures on the bank B and the front plate FP are made in the same manner as in the second embodiment.

In the above embodiment, the cathodes K are separated from each other in parallel, but two adjacent cathodes K may be connected. At this time, writing is performed simultaneously on two rows, which is advantageous in reducing the writing speed.

The shapes and positions of the electrodes and the electrode buses are not limited to those illustrated above, but may be changed arbitrarily within a basic cell configuration. Bank B
In the above description, the front panel RP is formed. However, the present invention is not limited to this, and may be formed on the front panel FP, or may be formed by dividing the both.

The panel of the present invention can also be used as a color display panel using a phosphor. in this case,
The phosphor may be applied to portions of the front plate FP and the rear plate RP other than the electrodes for the discharge cells C, the inside of the bank B, and the like by printing, exposing, or the like.

In the panel of the present invention, the bank B can be tapered. In this case, a structure in which the phosphor is applied to the inside of the bank B is advantageous in increasing the luminous efficiency. Although the priming slit between the discharge cells C is not particularly provided on the bank B, if a naturally occurring gap is small and priming is insufficient, it is more preferable to provide a priming path.

[0029]

As described above, according to the gas discharge display panel of the present invention, the location of the current limiting resistor is not limited to the display cell as in the conventional panel. At the bottom of the bank located in the adjacent row
Since the arrangement structure so that, it is possible to obtain a resistance of stable resistance value be sufficiently small pitch of the display cell. Therefore, a panel television display device or a display device having a current limiting resistor in each discharge cell can be used.
The application to the device for the A terminal can be sufficiently performed. Also, on the embankment
By placing a resistor at the bottom, the resistor
Greatly reduces the probability of exposure to the discharge space
The yield of production is improved.

[Brief description of the drawings]

FIG. 1 is an exploded plan view showing a structure of a gas discharge display panel as a first embodiment.

FIG. 2 is a sectional view taken along line E ₁ -E _{2 of} FIG.

FIG. 3 is a sectional view taken along line F ₁ -F ₂ of FIG. 1;

FIG. 4 is an exploded plan view showing the structure of a gas discharge display panel as a second embodiment.

FIG. 5 is a sectional view taken along line G ₁ -G ₂ of FIG. 4;

FIG. 6 is a sectional view taken along line H ₁ -H ₂ of FIG. 4;

FIG. 7 is an exploded plan view showing the structure of a gas discharge display panel as a third embodiment.

FIG. 8 is a sectional view taken along the line I ₁ -I ₂ of FIG. 7;

FIG. 9 is a sectional view taken along line J ₁ -J ₂ of FIG. 7;

FIG. 10 is an exploded plan view showing the structure of a gas discharge display panel as a fourth embodiment.

FIG. 11 is a sectional view taken along line L ₁ -L ₂ of FIG. 10;

FIG. 12 is a sectional view taken along line M ₁ -M ₂ of FIG. 10;

FIG. 13 is an exploded plan view showing the structure of a conventional gas discharge display panel.

FIG. 14 is a sectional view taken along line X ₁ -X _{2 of} FIG.

[Explanation of symbols]

RP back plate FP front plate A anode AL anode busbars R resistor B bank C discharge cell K cathode T auxiliary electrode DL, DL _1, DL ₂ insulating layer BH via hole

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuo Sakai 1-10-11 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Research Institute (72) Inventor Takao Kuriyama 1-10-11 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Broadcasting Research Institute (72) Inventor Toshihiro Kato 1-10-11 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Research Institute (72) Inventor Takashi Kawai 1-19-1, Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Broadcasting Research Institute (72) Inventor Motohiro Oka 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. No. 1 Dai Nippon Printing Co., Ltd. (72) Inventor Nao Tanabe 1-1-1, Ichigaya Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (72) Akita Katsuto Shibuya 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (56) References JP-A-6-181034 (JP, A) JP-A-4-6734 (JP, A JP-A-6-162934 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01J 17/49 H01J 17/04-17/10

Claims (3)

(57) [Claims] 1. A gas discharge display panel having a two-body structure including a back plate and a front plate, a plurality of anode buses parallel to each other are arranged on the back plate in a row, and one end is connected to each anode bus. The anode bus is connected via an insulating layer and its direction
Each connects each anode to the other end of the formed by parallel arranged resistor, perpendicular to the anode and with constituting the discharge cell by bank surrounding the periphery, a discharge cell with an anode bus
Banks that are arranged in a staggered pattern for each row and resistors are located in adjacent rows
A plurality of cathodes are arranged on the front plate at right angles to the anode bus for each row of the discharge cells . 2. A method according to claim 1, disposed parallel to the cathode on the front plate, characterized in that an auxiliary electrode covered with an insulating layer
The gas discharge display panel as described in the above. Wherein the anode bus bar and cathode bus bar, while the anode and cathode, according to claim 1 or 2 gas discharge display panel according to, characterized in that said cathode has an anode.