JPS5937634A - Character display device - Google Patents

Abstract

PURPOSE:To set an auxiliary scanning discharge state which makes easy the starting of display discharge operation on whole surfaces of a display panel by installing the first electrode group which are parallel on the inner surface of a substrate, the second electrode groups which face and cross the first electrode groups on the inner surface of a surface plate, and the third electrodes on the insulating steps of the first electrode groups. CONSTITUTION:A source fire electrode which is kept in the discharge state all the time is adjacent to the first electrode. By discharge atmosphere of the source fire electrode, discharge state is scanned to the third electrodes 19a, 19b,... on the panel surface, and scanning discharge which sets discharge atmosphere is conducted to each display dot zone which is set by dividing the first electrodes 14a, 14b,... by ribs 17a, 17b,.... When a voltage signal for display discharge is supplied, plasma discharge for display is induced in a good response to surely display character and pattern by discharge atmosphere of scanning discharge.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat nine-channel character gray device using a plasma discharge display or a fluorescent display in which display dots formed by discharge are arranged in a matrix.

A character display gray device is constructed by arranging a large number of Gradama discharge areas on a plane in the form of a matrix, and displays characters, figures, etc. by selectively operating the discharge display of the large number of discharge areas. It is.

This character chair! The RAID device is a flat, funnel-shaped glass container that encloses a plasma discharge gas.
A flat sealed chamber is formed between the front plate, which is also made of transparent glass, and is set up opposite to each other at a small distance.The plasma discharge gas is sealed within this sealed chamber. do.

On the inner surface of the substrate constituting the container, a large number of strip-shaped cathode electrodes are formed in parallel and adjacent to each other at small intervals, and on the inner surface of the surface plate, cathode electrodes are formed in parallel to each other at right angles to the cathode electrodes. Form a large number of anode electrodes.

In other words, when a potential difference exists between the cathode electrodes and the anode electrodes at the cross-opposing portions, a plasma discharge is generated between the opposing electrodes, resulting in a visible dot display. Therefore, by sequentially distributing pulsed cathode voltage signals having different phases to the cathode electrode, and distributing an anode voltage signal for display driving corresponding to the above-mentioned helical cathode voltage signal to the anode electrode. Characters, figures, etc. in dot array will be displayed.

In such a character display gray device, 1.
Plasma discharge operation must be performed with sufficient response speed at the cross-opposing portions of the cathode and anode electrodes to which the cathode voltage signal and the anode voltage signal are applied, respectively. However, in order to generate a discharge between the cathode electrode and the anode electrode in the absence of a discharge atmosphere, a sufficiently large potential difference must be set between the two electrodes. For this reason, in this type of character display gray device, various measures have been taken to facilitate the activation of the discharge operation in the discharge display dot portions corresponding to each intersection between the cathode electrode and the anode electrode. ing.

For example, as shown in U.S. Pat. No. 4,206,386, cathode voltage signals in a 4' pulse shape with different phases are sequentially distributed to a large number of cathode electrodes, and all display dots are distributed to an anode electrode. A scanning discharge signal with a sufficiently short /4' pulse width is supplied so as to Then, an invisible auxiliary discharge is dynamically performed in the display dot portion on the entire surface of the display panel. Then, an anode voltage signal for display is supplied to the anode electrode in a state where it is superimposed on the scanning discharge signal.

However, with such means, in order to maintain a discharge atmosphere for each display dot, it is necessary to distribute and supply a scanning discharge signal with an extremely short pulse width to the anode electrode, and the drive of the character display gray device is Makes the circuit extremely complex.

An object of the present invention is to provide a character display device that sets an auxiliary scanning discharge state that improves the discharge rise υ response for display over the entire flat display tunnel surface. .

Another object of the present invention is to set a discharge atmosphere that improves the rising response of the main discharge for display in each display dot portion without providing a signal circuit for scanning discharge with a particularly short pulse width. It is to do so.

That is, in the character display device according to the present invention, a first electrode group consisting of a plurality of electrodes is formed parallel to the circular surface of the substrate constituting the container, and the first electrode group is A second electrode group consisting of a plurality of electrodes is formed on the inner surface of the surface plate in a state of facing and intersecting. An insulator pedestal having a surface adjacent to the group is formed, and third electrodes each connected to the corresponding electrode of the first electrode group are formed on this insulator pedestal.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross section of a part of a flat tunnel-shaped display device, for example, a substrate 1 made of glass.
A transparent surface plate 12 made of a lath plate is set so as to face the surface plate 1 at a small distance from the surface plate 1, and a flat sealed container is constituted by this substrate 11 and the surface plate 12. For example, inside this sealed container! A lasma discharge ifs is enclosed.

A plurality of strip-shaped first electrodes 14a, 14b, etc., as shown in FIG. . This plurality of first electrodes 14a.

14b... are adjacent to each other at a small interval and set in a parallel state, and constitute a first electrode group serving as a cathode electrode. This first electrode group is formed with high precision by thick film printing on the substrate 11.

Further, on the inner surface of the surface plate 11, a plurality of blackened insulating layers 15a are formed into strips intersecting the first electrode group at right angles.
, 15b... Gold is formed and this blackened insulating layer 15m, 15
b...First electrodes 14m, 14 on each surface part
b... second electrode 16m intersecting with each;
16b... are formed by, for example, thick film printing. This second
The electrodes 16a, 16b- are the first electrode 14m
, 14b- constitute a second electrode group that becomes anode electrodes forming a display area, respectively.

Then, on the surface of the substrate 11 on which the first electrode group is formed,
Insulator ribs 17a, 17b, . 17a, 17b... are the first electrodes 14g
, 14b . . . to form a display area. Furthermore, insulator stands 18m, 18b, . . . are provided on one side surface of the insulating ribs 17a, 17b, . . . so as to fit into the partitioned display area. That is,
The insulator stands 18a, 18b, . . . are configured to protrude across the first electrode group, and their upper surfaces are configured to be sufficiently close to the second electrode group. Then, on the upper surface of each of the insulator stands 111g, 18b..., third electrodes 19m, 19 are provided so as to correspond to the first electrodes 14g, 14b..., respectively.
b... is formed. This third electrode 19a, 19b.
. . . are discharge electrodes for scanning that form a discharge atmosphere, and the through holes 20 are connected to the first electrodes 14m, 14b .
a, 20b, . . . are electrically connected.

That is, in the character display device configured as described above, the first electrodes 14a, 14b...
The cathode voltage signals having different phases are distributed and supplied to the second electrodes 16m and 1.
6b..., an anode voltage signal corresponding to the character shape to be displayed is distributed and supplied. Plasma discharge is generated at the intersection of the first electrode and the second electrode to which the cathode voltage signal and the anode voltage signal are applied in synchronization, and one dot is displayed. A predetermined character shape is displayed by plasma luminescence by a continuous combination of .

When displaying characters, etc. in this way, the cathode voltage signal is distributed and applied to the first electrode group, and the display anode voltage signal is distributed and supplied to the second electrode group. In the device, an auxiliary anode voltage signal of a low voltage within a range in which the above-mentioned discharge display operation is not performed is constantly supplied to each electrode 16g, 16b, . . . of the second electrode group. put.

For example, when the voltage for generating and maintaining a discharge between the first electrode 14a and the second electrode 16h is 180 to 220V, the voltage between the first electrode 14a and the second electrode 16h is 155 to 17V.
An anode voltage signal such that a potential difference of 8 degrees is set is always applied to the second electrode group. ,.

In this way, for the second electrode group, then the auxiliary anode'?
If the l pressure signal is set to be supplied, the first PeJ pole 14P
Corresponding to the distribution of the cathode voltage signal to L, 14b...
A discharge occurs between the electrode and the third electrode (?l9PL, 19b...).Although it has been omitted in the explanation so far, the electrode adjacent to the first electrode directly in front of the progenitor 11, There is a large electrode that is always maintained in a discharge state, and therefore, due to the discharge atmosphere of this pilot electrode, the third electrode 1 on the entire gunnel surface
9g, 19b... so that the discharge state is scanned, the first electrodes 14m, 14b-
The rib 17a.

A scanning discharge is performed to set a discharge atmosphere for each display dot area divided and set by f7b, . . . .

Here, depending on the height of the insulator stands 18h, 18b... that support the third electrodes 19m, 19b...
a , 14 b ·= and the second electrode 16a.

16b... can be set sufficiently lower than the voltage value of the display discharge reservoir, and therefore, in the absence of the display discharge reservoir anode voltage signal, the first
No display discharge occurs between the electrode group and the second electrode group. When a voltage signal for display discharge is supplied to the second electrodes 16h, 16b, . . . , plasma discharge for display is reliably induced with sufficient responsiveness by the discharge atmosphere caused by the scanning discharge. The display operation of characters, figures, etc. can be executed smoothly and reliably.

In addition, when performing such a scanning discharge, it is conceivable to partition the auxiliary discharge area for this scanning discharge and the main discharge area for display with an insulating material barrier. However, in the case of the above configuration, since this partition barrier is not required, the atmosphere of the auxiliary discharge smoothly flows into the main discharge area during the main discharge, and the display responsiveness can be more reliably improved. can.

In Example 1f11, the insulator stands 18m, 18b, . . . were shown as having flat portions facing the second electrodes 16a, 16b, .

The third electrode (fi, 19 m
, 19b- can be formed close to the second electrodes 16g, 16b-.

Further, in the embodiment, the case of plasma discharge display has been described, but for example, the first electrode 14a.

If a fluorescent material is set in the area 14b and a solar discharge gas is enclosed in a flat tunnel container, characters can also be displayed using fluorescent dots.

As described above, according to the present invention, for scanning discharge, it is sufficient to constantly apply a low voltage voltage signal divided by, for example, a resistor circuit to the second electrode group.
There is no need to construct a special circuit for scanning discharge. Furthermore, it is possible to reliably apply a discharge atmosphere that improves the start-up of display discharge to each display dot region, thereby providing a character display device with sufficiently good display responsiveness.

[Brief explanation of drawings]

Figure 1 is a partially cut away configuration diagram of a character display device according to an embodiment of the present invention, and Figure 2 is a plan view showing a portion of the substrate surface taken out. 11-...Substrate, I2...Surface plate, 14*, 14
b...first electrode (cando), 1.5h, 15b.
...blackened insulating layer, 16a + 16b...@2 electrode (anode), 17N, 17b--insulator lip, 18a. 1sb...Insulator stand, 19a, 19b...Third electrode.

Claims (1)

[Scope of Claims] (A first electrode group consisting of a substrate and a surface plate that enclose a discharge gas and form an isolated flat container, and a plurality of strip-like electrodes formed parallel to the inner surface of the substrate; a second electrode group consisting of a plurality of electrodes formed on the inner surface of the surface plate so as to cross and face the first electrode group; and each electrode of the first electrode group and each electrode of the second electrode group. an insulator stand provided corresponding to each intersection with the electrode and having a surface close to the second electrode group; and an insulator stand provided on the insulator stand and connected correspondingly to each electrode of the first electrode group. A character display device characterized by comprising a third electrode formed on the inner surface of the substrate.
2. The device according to claim 1, wherein the device is configured to protrude in a strip shape on the electrode group in a manner that intersects with the electrode group. (3) The device according to claim 1, wherein the third 'α pole is connected to each electrode of the first electrode group on the substrate surface through a through hole passing through the insulator base. . (4) The device according to claim 1, wherein the surface plate is provided with a blackened insulating layer corresponding to the insulating base portion, and electrodes constituting the second electrode group are formed on this insulating layer.