JPS5927063B2 - gas discharge panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an AC discharge type gas discharge panel in which a shift section for shifting discharge spots and a display section for displaying a combination pattern of discharge spots are disposed adjacent to each other.

Various configurations have already been proposed for self-shifting gas discharge panels that sequentially shift a discharge spot generated at one end toward the other end according to written information.

Such conventional self-shifting gas discharge panels are
Since the written content shifts sequentially, it is difficult to read the content until the display moves to static display operation, and corrections to characters in the middle of one line must be made by rewriting the entire line. , it is not easy to delete or modify one part.

Furthermore, a two-layer gas discharge panel has been proposed in which a discharge spot serving as a pilot flame is shifted and a discharge spot is generated on a display electrode by utilizing the pilot flame effect of this discharge spot.

This gas discharge panel has the disadvantage of a complicated structure because it has a two-layer structure, requires a barrier, and has a crossover section.

Furthermore, since it is a direct current discharge type, it requires an external memory, and it is necessary to repeatedly scan the discharge spot and select the display electrode, making it difficult to display high resolution and high brightness.

The present invention has improved the conventional drawbacks as described above, and its purpose is to simplify the configuration by eliminating the need for barriers and crossover parts, to easily modify and change display contents, and to provide high-resolution and high-brightness display. The objective is to provide a gas discharge panel that enables.

Examples will be described in detail below.

FIG. 1 is an explanatory diagram of the electrode arrangement according to an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views taken along lines Ll-Ll' and L2-L2' in FIG. A plurality of busbars and electrodes are provided on the substrates 1 and 2, respectively, and a dielectric layer 3.4 made of low melting point glass or the like is provided on the electrodes, and the substrate 1 is , 2 are arranged facing each other.

The substrate 1 includes bus lines Xi, X2, shift electrodes X1 t1 y X211 s display electrodes xdl connected to them by column conductors (lead wires) as shown in the figure.
! I z Xd2tI (7,, i=1 t 22
3.

...) and a write electrode wt connected to the write bus line WB, and the substrate 2 is provided with a write electrode wt connected to the bus lines Yl, Y2 and a shift electrode y1t connected to them by a row conductor (lead wire). ", y2tJ (j: 1 shi 2 3)...
) and a display electrode ydt connected to the terminal Zt.

A write discharge point W between the write electrode wt and the electrode y1t,
Shift electrode x, ti y xiti and shift electrode y1
A shift section is formed by discharge points A-D between tj and y21j, and the display electrode xd1ti.

Discharge point Bd, C between Xd2ti and display electrode ydt
A display section is formed by d, and the discharge spots are sequentially shifted to the shift section, and the discharge point of the display section is placed at a position that receives the pilot flame effect from the discharge spot, and selectively utilizes the pilot flame effect. This produces a discharge spot at the discharge point of the display section.

FIG. 4 shows an example of the drive waveform, vx i.

VX2, VYI, VY2, and VW are each bus line X
1, X2. Yl, Y2 and the pulse voltage waveform applied to the write bus WB, vZ is the pulse voltage waveform selectively applied to the terminal Zt, VBd, VCa is the discharge point Bd of the display section
, CD is a pulse voltage waveform applied to CD, SP is a shift pulse, VP is an overlap pulse, EP is an erase pulse, WP is a write pulse, and the shift pulse SP is 5~
15μS1 overlap pulse VP is O13~5μS1
The erase pulse EP has a pulse width of about 0.3 to 3 μs.

First, the write cycle will be described. A write pulse WP is applied to the write bus WB so that the voltage is higher than the discharge start voltage of the write discharge point W, and a discharge spot is generated at the write discharge point W.

Next, an overlap pulse ■P is applied to the write bus WB, a shift pulse SP is applied to the bus X1, and the space charge, metastable atoms, etc. due to the discharge generated at the write discharge point W are diffused to the discharge point A. However, since the discharge starting voltage at the discharge point A is reduced, a discharge spot is also generated at the discharge point A.

Next, the erase pulse EP is applied to the write bus WB, so that
The discharge at the write discharge point W is erased.

Next, a shift pulse SP is applied to the bus line Y2, and the discharge point B
The discharge spot is shifted, and the discharge spot is sequentially shifted in the same manner.

For example, when the discharge spot shifts to the discharge point B formed between the electrode X112 and the electrode y212, the terminal Z1
When a write pulse WP of opposite polarity to the shift pulse SP is applied to the shift pulse SP, adjacent to the discharge point B, the electrode yd1 and the electrode
A discharge spot is generated at the discharge point Bd formed between the discharge point Bd and the discharge point Bd due to the pilot flame effect caused by the discharge spot generated at the discharge point B.

In that case, the pilot flame effect does not reach the discharge point Bd located far away from the discharge point B, for example, the discharge point Bd formed between the electrode yd1 and the electrode Xd111 and the electrode yd1 and the electrode yd113, so that the discharge spot is It will not occur.

Pulse voltages indicated by vBd and VCd are applied to the discharge points Bd and Cd, and they are placed close to each other, so after a discharge spot is generated at the discharge point Bd, the shift of the discharge spot in the shift section Accordingly, it reciprocates between the discharge point Cd and the discharge point Cd.

Furthermore, even if a write pulse WP is applied to the terminal Zt in order to generate a discharge spot at another discharge point of the display section, a wall voltage opposite to the wall voltage formed by the discharge will appear at the discharge point once writing has been completed. Since the write pulse will be applied to the polarity of the direction, no problem will occur.

As described above, by shifting the discharge spot to the shift section and applying a write pulse to the terminal Zt corresponding to the shifted position of the discharge spot, a discharge spot can be generated at the discharge point of the display section. The displayed content can be written and displayed in the same manner as when writing is performed sequentially from the end of the line without shifting from the beginning.

Furthermore, since the written content is memorized by the wall charges on the dielectric layers 3 and 4, the discharge spot at the shift portion only needs to be shifted by a writing cycle. By applying the pulse voltage to X2 and the terminal Zt, it is possible to continuously display the discharge spot at the discharge point of the display section.

Therefore, compared to the DC discharge type, an external memory is not required and high brightness display can be performed.

Also, to explain the erase cycle for erasing a part of the interior that has already been written, the shift section shifts the discharge spot in the same manner as described above, and the discharge of the shift section adjacent to the discharge point of the display section to be erased is A write pulse WP is applied to the terminal Zt at the timing when the discharge spot shifts to the point.

No shift pulse SP is applied to the terminal Zt before this write pulse WP.

The strong discharge generated at the discharge point Bd by this write pulse WP erases the wall charge at the adjacent discharge point Cd, and the steep fall of the write pulse WP causes self-erasure at the discharge point Bd. .

At this time, since no discharge occurs at the discharge point of the display section where the discharge spot of the shift section is not located nearby, no erasing action occurs.

After such erasure is performed, a portion of the memory can be rewritten by the write cycle described above.

Further, as a partial erasing means, when the discharge spot of the shift section is shifted to the position to be erased on the display section, the discharge spot is continuously generated at the same discharge point over several cycles or more than several tens of cycles.

As a result, the wall charges at the discharge points in the adjacent display areas are neutralized by the space charges and disappear, making it possible to perform an erasing action.

At this time, since the discharge spot of the shift section is not near the discharge point of the other display section, the wall charge does not disappear, and the written content is retained.

Also, instead of writing on the display section while shifting one discharge spot per line, a plurality of discharge spots are shifted as a display pattern in the shift section as in the conventional self-shift type gas discharge panel, It is also possible to write one line on the display section at the same time.

Note that in order to reduce the brightness due to the discharge spot in the shift part, it is preferable that the electrode in the shift part be an opaque electrode.

Although the shift section has been described as an AC discharge type, that is, a structure in which the electrodes are covered with a dielectric layer, it can also be of a DC discharge type in which the electrodes are exposed to a space filled with discharge gas.

In addition, the drive circuit can adopt a configuration that has already been proposed. For example, the drive circuit can be driven by the previously proposed M
E (Meander tctrode) type self-shift type gas discharge panel is configured for shift operation, and the display section is driven by comparing the contents of a counter that counts shift operation cycles with writing position information. A configuration may be adopted in which a write operation is performed when a match occurs.

When making a partial correction using the above-mentioned configuration, for example, when ABDDEF is written as shown in Figure 5a,
To erase D in the square in the figure and write C, first shift the same character pattern as the character to be erased or the discharge spot of the entire one character area to the shift I section, and then At this position, the writing operation to the display section is created by neutralizing the wall charge on the display section, etc. to erase the letters as shown in C in the same figure, and then by discharging the corrected letter C pattern in the shift section. When the spot is shifted to the position indicated by the dotted line C in d of the same figure, a writing pulse is applied to the display section to correct the characters in the middle of one line as shown in e of the same figure. Can be done.

As explained above, in the present invention, the shift part and the display part are arranged adjacent to each other, and writing can be performed on the display part by the pilot effect of the discharge spot that shifts to the shift part. It does not shift and is easy to read.

Also, since the electrodes are regularly connected to multiple busbars, there is no crossover part, and there is no two-layer structure, so
There is an advantage that no barrier is required and the structure is simple.

The number of phases of this bus bar is not limited to 2-2 phases as in the embodiment, but it is also possible to increase the number of phases.

In addition, since at least the display section is of the AC discharge type, it is possible to store and display the written contents, without the need for an external memory.
Since discharge spots can be continuously generated and displayed, there is an advantage that high-brightness display can be performed economically.

In addition, the display section is composed of two discharge points Bd and Cd to enable high-intensity display, but the electrodes xd1 and 5i
) It is also possible to omit either one of xd2ti and configure it with only one discharge point, either the discharge point Bd or the inclination of the discharge point Cd.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the electrode arrangement according to the embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views along lines Ll-Ll' and Ll-L2' in FIG. 1, and FIG. 4 is a driving waveform. An explanatory diagram of an example, fifth
The figure is an explanatory diagram of a partially modified operation. Also 1. X2. Yl, Y2 are busbars, WB is write busbar, Zt
is a terminal, xltitsu x2. l,sriY11jtsuy2tj
is an electrode constituting the shift section, Wt is a write electrode, and Xdlt
i, xd2ti, and ydt are electrodes forming the display section.

Claims (1)

[Claims] 1 A plurality of row conductors arranged substantially parallel on one substrate are alternately connected to two-phase busbars on both sides, and protruding alternately from one side to the other between two adjacent row conductors. Shift electrodes are formed regularly on the other substrate, and a shift electrode is formed on the other substrate to commonly oppose two adjacent shift electrodes on the one substrate, and one end and the other end of the shift electrode are formed on the other substrate. are connected by column conductors to the other end and one end of the shift electrodes that commonly oppose two adjacent electrodes of the shift electrodes in different adjacent rows on the one substrate, respectively, and the column conductors are connected to the two phase electrodes on both sides. Connected to the bus bar, opposing points of the shift electrodes of the one substrate and the other substrate are used as shift discharge points, and the shift discharge points are arranged regularly in the row direction, and the discharge spot is shifted in the row direction. In the gas discharge panel, a display electrode covered with a dielectric layer is formed adjacent to the shift electrode of one row conductor of the set of two row conductors on the one substrate, and the display electrode is covered with a dielectric layer. An island-shaped display electrode covered with a dielectric layer is formed opposite to the display electrode on a column conductor connected to the bus bar of at least one phase on the substrate, and the display electrode on the one and the other substrates is formed. A gas discharge panel characterized in that the opposite points of the display discharge points are used as display discharge points, and a display portion is constituted by a regular arrangement of the display discharge points.