KR20080111088A - Three-electrode surface discharge display - Google Patents

Abstract

A three-electrode surface discharge display (1) comprising a plurality of discharge tubes (10) juxtaposed to constitute a panel-like effective discharge region (S) as a whole, a plurality of pairs of display electrodes each consisting of a pair of parallel electrodes (X, Y) arranged to intersect with each discharge tube (10) on one surface side of the plurality of discharge tubes (10), and an address electrode (A) arranged along each discharge tube (10) on the other surface side of the plurality of discharge tubes (10). On the outside of the effective discharge region (S), a pair of dummy electrodes (DX, DY) corresponding respectively to the sustention electrode (X) and the scan electrode (Y) are provided in parallel with the pair of display electrodes on one end side of the effective discharge region (S), and the dummy electrode (DY) and the scan electrode (Y(1)) constituting the pair of display electrodes on one end side of the effective discharge region (S) are connected electrically. ® KIPO & WIPO 2009

Description

3-electrode surface discharge type display device {THREE-ELECTRODE SURFACE DISCHARGE DISPLAY}

The present invention relates to a three-electrode surface discharge type display device used, for example, as a flat-panel display.

As an example of the conventional three-electrode surface discharge type display device, there is one disclosed in Patent Document 1 below. The display device has a laminate structure in which a plurality of elongated discharge tubes are arranged in parallel between a transparent substrate on the front side and a substrate on the back side, and the substrates and the discharge tube are bonded by an adhesive or the like. The phosphor layer is provided in the desired area inside each discharge tube. On the inner surface of the substrate on the front side, a plurality of display electrode pairs formed of a pair of scan electrodes and sustain electrodes parallel to and in contact with a plurality of discharge tubes provided in parallel are formed at regular intervals. On the inner surface of the substrate on the rear side, address electrodes are formed in contact with each discharge tube. In each discharge tube, a region where each display electrode pair intersects is a light emitting unit portion (light emitting cell). In addition, a display line is formed by each display electrode pair, and a display area is formed by the area | region in which the said display line was arrange | positioned.

When displaying an image using a display device having such a structure, in order to realize gradation display, for example, a driving method called an address display period separation method (ADS method) is employed. In the ADS method, one frame (display period of one screen) is divided into a plurality of subfields with weights of luminance, and each subfield has a reset period for equalizing the charges of all the light emitting cells and light emission to be emitted. An address period for selecting a cell and a sustain period for emitting the selected light emitting cells.

In the reset period, a reset voltage is applied between all the scan electrodes and the sustain electrodes, and unnecessary charges in each light emitting cell are erased. In the address period, the scan pulse voltage is sequentially applied to the scan electrodes while the given address pulse voltage is applied to the address electrodes along the display data. As a result, address discharge is generated between the scan electrode and the address electrode, and wall charges are accumulated in a desired light emitting cell. In the sustain period, a sustain pulse voltage is applied to the scan electrode and the sustain electrode alternately. As a result, only the light emitting cells in which the wall charges are accumulated discharge light. The number of sustain pulses in the sustain period is determined corresponding to the importance of luminance in the subfield.

One subfield is completed by performing these reset periods, address periods, and sustain periods. By repeating the predetermined number of subfields, one frame is displayed in an area, and the display of this one frame is continued to display a moving image. In this driving method, the light emitting cells to emit light in the address period can be selected, and the light emitting cells selected in the sustain period can be discharged and discharged simultaneously, so that time can be used efficiently.

In the drive of the three-electrode surface discharge type display device, since the address discharge is executed by sequentially applying the scan pulse voltage, it starts from the display line on one end side in the direction in which the discharge tube extends, and sequentially toward the display line on the other end. Is carried out. When address discharges are performed in sequence, charged particles (priming particles) such as electrons and ions generated by the address discharge are sequentially supplied to the next light emitting cell, and these priming particles play a role as embers ( By the priming effect), address discharge is stably performed in each light emitting cell. On the other hand, when the supply of priming particles from the last light emitting cell is insufficient, a miss (discharge miss) of address discharge is likely to occur. In the display line at one end where the address period is started, since there is no supply of priming particles from the light emitting cells immediately before, the probability of occurrence of the aforementioned discharge miss is relatively high. If such a discharge miss occurs, the light emitting cells which should originally emit light become non-emission, and thus the display quality is reduced. On the other hand, by covering the scan start line or a display line in the vicinity thereof with a light shielding film, a method of locating the line outside the effective display area and configuring it as a so-called dummy line can also be considered. In this case, however, the address operation in the dummy line does not contribute to light emission, so that the address period is relatively increased. On the other hand, since the length of one frame is fixed at 16.7 ms (1/60 second) in the case of television broadcasting, for example, the above-mentioned increase in the address period causes a decrease in the sustain period, and consequently a decrease in luminance. Will result.

Patent Document 1: Japanese Unexamined Patent Publication No. 2003-86142

Disclosure of the Invention

The present invention has been devised based on such circumstances. SUMMARY OF THE INVENTION An object of the present invention is to provide a three-electrode surface discharge type display device capable of effectively preventing a miss of address discharge in an effective display area while suppressing an increase in an address period.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, the following technical means are calculated | required.

The three-electrode surface discharge display device provided by the first aspect of the present invention comprises: a discharge tube group in which a plurality of discharge tubes extending in a linear shape having a predetermined length are installed side by side to form a panel as a whole; A plurality of display electrode pairs arranged on one surface of the discharge tube group so as to intersect with the longitudinal direction of each discharge tube, each of the pairs of scan electrodes and sustain electrodes each having parallel discharge slits of a predetermined width therebetween; And an address electrode arranged on the other side of the discharge tube group along the longitudinal direction of each discharge tube, wherein slits are formed between the display electrode pairs having a predetermined width by the adjacent display electrode pairs. In a three-electrode surface discharge type display device in which an effective display region is formed by a plurality of display electrode pairs, the scanning is performed outside the effective display region in parallel with the display electrode pair at one end of the effective display region. Dummy electrode pairs comprising pairs of first and second electrodes respectively corresponding to the electrodes and the sustain electrodes are provided, and the scan electrodes constituting the first electrode and the display electrode pair on the one end side are electrically connected. It is characterized by.

Preferably, the scan electrode and the sustain electrode constituting the display electrode pair are each of a relatively wide transparent electrode, a relatively narrow and good electroconductor, and are formed from the discharge slit in the transparent electrode. The first and second electrodes constituting the dummy electrode pair are provided with metal electrodes that are more conductive than the transparent electrode, and the width of the first electrode is greater than that of the bus. It is larger than the width of the electrode.

Preferably, the width of the discharge slit of the dummy electrode pair is smaller than the width of the discharge slit of the display electrode pair.

Preferably, the visible light transmittance of the dummy electrode pair is smaller than the visible light transmittance of the display electrode pair.

Preferably, the said 1st electrode and the scan electrode which comprises the display electrode pair of the said one end part are connected by wiring.

Preferably, the first electrode and the scan electrode constituting the display electrode pair on the one end side are connected by a driving circuit.

Preferably, the width of the gap portion between the dummy electrode pair and the display electrode pair on the one end side is smaller than the width of the slit between the display electrode pairs.

Preferably, the first electrode and the scan electrodes constituting the display electrode pair on the one end side are disposed to be adjacent to each other.

A three-electrode surface discharge type display device provided by the second aspect of the present invention comprises: a discharge light emitting element group having a plurality of discharge light emitting elements extending in a linear shape in a predetermined length and arranged in parallel to form a panel as a whole; A plurality of display electrodes arranged on one surface of the discharge light emitting element group so as to intersect with the longitudinal direction of each discharge light emitting element, each consisting of a pair of scan electrodes and sustain electrodes sandwiching discharge slits of a predetermined width in parallel to each other. pair; And address electrodes arranged on the other side of the discharge light emitting element group along the longitudinal direction of each discharge light emitting element, wherein slits between display electrode pairs having a predetermined width are formed by the adjacent display electrode pairs. In a three-electrode surface discharge type display device in which an effective display region is formed by a discharge light emitting element group and the plurality of display electrode pairs, a display electrode pair on one end of the effective display region outside the effective display region. In parallel with each other, a dummy electrode pair comprising a pair of first and second electrodes corresponding to the scan electrode and the sustain electrode is provided, and the scan electrode constituting the first electrode and the display electrode pair on one end side thereof. This is electrically connected.

1 is an overall perspective view showing a schematic configuration of a three-electrode surface discharge display device according to the present invention;

2 is a perspective view illustrating main parts of a structure of the display device illustrated in FIG. 1;

3 is a sectional view showing the principal parts of the structure of the display device shown in FIG. 1;

4 is a plan view illustrating an electrode structure of the display device illustrated in FIG. 1;

5 is a sectional view showing the principal parts of the structure of the display device shown in FIG. 1;

6 is a driving waveform diagram of a three-electrode surface discharge display device according to the present invention;

Preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 to 5 show an example of a three-electrode surface discharge type display device according to the present invention. The display device 1 is a three-electrode surface discharge type display device for color display using a discharge tube as a discharge light emitting element.

As shown in FIGS. 1 to 3, the display device 1 includes a transparent substrate 20 on the front side (not shown in FIG. 2 for convenience), a substrate 21 on the back side, and these substrates 20. And a plurality of discharge tubes 10 arranged in parallel between the plurality of electrodes 21, a plurality of display electrode pairs 30, a dummy electrode pair 40, and a plurality of address electrodes A.

As shown in FIG. 3, the discharge tube 10 is made of, for example, an elongated glass tube having a substantially rectangular cross section, and the substrate (through an adhesive or the like) is sandwiched between the substrates 20 and 21. 20) and (21). The tube diameter of the discharge tube 10 is about 1 mm in the long side and about 0.5 mm in the short side, for example, and the thickness of the discharge tube 10 is about 0.1 mm, for example. The MgO film 11 for glass protection is formed uniformly in the inner wall surface of the discharge tube 10, and the phosphor layer 12 is formed in the surface of the MgO film 11. As shown in FIG. In more detail, as shown in FIG. 3 or FIG. 5, the phosphor layer 12 is formed in a desired area near the substrate 21 on the rear side. The phosphor layer 12 consists of phosphor of any one of R (red), G (green), and B (blue) which become three primary colors of color display. Discharge gas (for example, mixed gas of Ne and Xe) is enclosed in the discharge tube 10, and the both ends of the discharge tube 10 are sealed. The discharge tubes 10 of the above configuration are arranged in RGB order. When a voltage is applied from the outside, such discharge tube 10 locally discharges the discharge gas in that portion, and the vacuum ultraviolet rays generated at that time excite the phosphor layer 12 to emit visible light of RGB.

As shown in FIG. 3, the board | substrates 20 and 21 of a front side and a back side are formed in plate shape with transparent resin. The substrate 20 on the front side is for transmitting visible light from the discharge tube 10 and emitting it to the outside as display light. In addition, the board | substrate 21 of the back side does not need to have transparency.

On the inner surface of the substrate 20 on the front side, a plurality of display electrode pairs 30 are formed so as to cross each discharge tube 10 and extend in the horizontal direction. The display electrode pair 30 is composed of a pair of scan electrodes Y and sustain electrodes X (see FIGS. 2 and 5). The pair of electrodes X and Y are arranged in parallel with a predetermined distance from each other. The gap portion between the electrode X and the electrode Y is called a discharge slit, and the width W1 is, for example, about 300 μm. As shown in FIG. 5, the electrodes X and Y are formed on the transparent electrode 301 formed on the substrate 20 and the transparent electrode 301, respectively, and are narrower than the transparent electrode 301. It is comprised of the bus electrode 302. The transparent electrode 301 is a part which transmits visible light from the discharge tube 10, and consists of a transparent electrode material. The bus electrode 302 is for efficiently flowing an electric current, and is made of a metal electrode material having better conductivity than the transparent electrode 301. Since the bus electrode 302 does not substantially transmit visible light, the bus electrode 302 is formed at one end of the transparent electrode 301 spaced apart from the discharge slit so as not to interfere with light emission as much as possible. As a material which comprises the transparent electrode 301, ITO (tin indium oxide) is mentioned, for example, As a material which comprises the bus electrode 302, copper and aluminum are mentioned, for example. The transparent electrode 301 and the bus electrode 302 are formed by, for example, depositing an electrode material by a vapor deposition method, a sputtering method, or the like, and then removing unnecessary portions by etching. As an example of the dimensions of the transparent electrode 301 and the bus electrode 302, the transparent electrode 301 has a thickness of 0.2 μm, a width of about 850 μm, and the bus electrode 302 has a thickness of 5 μm and a width of 30 μm. It is enough.

In the display electrode pair 30 having the above-described configuration, a region where each discharge tube 10 intersects each display electrode pair 30 is a light emitting unit portion (light emitting cell). A display line is formed by each display electrode pair 30 (one pair of electrodes X and Y), and the display lines are arranged at regular intervals along the direction in which the discharge tube 10 extends. The gap portion of the adjacent display line (display electrode pair 30) is called a slit between display electrode pairs, and the width W2 thereof is, for example, about 800 mu m. In this embodiment, the number of display lines is n, and the effective display area S is formed by the area | region where these n display lines are arranged.

As shown in FIG. 4 or FIG. 5, the inner surface of the front substrate 20 is one end side of the effective display area S as the outside of the effective display area S (in FIG. 4). A dummy electrode pair 40 (dummy line) is formed in parallel with the display electrode pair 30 (display line) on the upper end side. The dummy electrode pair 40 consists of a pair of the dummy electrode DY corresponding to the scan electrode Y and the dummy electrode DX corresponding to the sustain electrode X. FIG. The arrangement order of the dummy electrodes DX and DY is different from the arrangement order of the electrodes X and Y of the display electrode pair 30. In other words, the dummy electrode DY is disposed adjacent to the scan electrode Y (1).

As well shown in FIG. 5, the dummy electrodes DX and DY are each composed of a transparent electrode 401 formed on the substrate 20 and a metal electrode 402 formed on the transparent electrode 401. The transparent electrode 401 is formed by the same formation process as the transparent electrode 301, and is comprised from the same transparent electrode material as the transparent electrode 301. In addition, the width and thickness of the transparent electrode 401 are about the same as those of the transparent electrode 301. The metal electrode 402 is formed by the same formation process as the bus electrode 302 and is made of the same metal electrode material as the bus electrode 302. The thickness of the metal electrode 402 is about the same as the thickness of the bus electrode 302. On the other hand, the width of the metal electrode 402 is larger than the width of the bus electrode 302 and is about the same as the width of the transparent electrode 401. The width W3 of the discharge slit of the dummy electrode pair 40 (gap portion of the electrodes DX and DY) is smaller than the width W1 of the discharge slit of the display electrode pair 30. For example, it is about 250 micrometers. The width W4 of the gap portion between the dummy electrode pair 40 and the display electrode pair 30 adjacent thereto (the display electrode pair 30 at one end of the effective display region S) is the display electrode pair. It is smaller than the width W2 of the liver slit, and is about 600 µm, for example.

As shown in FIG. 4, the ends of the dummy electrode DY and the scan electrode Y (1) of the display electrode pair 30 adjacent thereto are electrically connected to each other by the wiring 50. . Moreover, the edge part of the dummy electrode DX and the sustain electrode X (1) of the display electrode pair 30 adjacent to this is electrically connected by the wiring 51. As shown in FIG. The wirings 50 and 51 are formed by patterning in the same formation process as the formation of the bus electrode 302 and the metal electrode 402, for example. In addition, a dielectric layer 13 is formed on the inner surface of the front substrate 20 so as to cover the display electrode pair 30 and the dummy electrode 40 as necessary.

As shown in FIGS. 1 to 3, the inner surface of the substrate 21 on the rear side extends in the vertical direction along each discharge tube 10 while intersecting the display electrode pair 30 and the dummy electrode pair 40. A plurality of address electrodes A are formed. The address electrode A is formed by, for example, forming a metal such as copper having excellent conductivity by a vapor deposition method or a sputtering method and then removing unnecessary portions by etching. In addition, a drive IC (drive circuit) not shown for applying a voltage is connected to each electrode of the display device 1. Specifically, a first driving IC for applying a voltage to each of the address electrodes A, a second driving IC for applying a voltage to the dummy electrode DX and all the sustain electrodes X, and a dummy electrode ( The third drive IC for applying a voltage to DY) and all the scan electrodes Y is provided.

When displaying an image using the display apparatus 1 of the said structure, it can drive by ADS method. That is, one frame is divided into eight subfields to which, for example, a luminance weight is assigned. 6 is an example of a drive waveform diagram in one subfield SF. The subfield SF is composed of a reset period TR, an address period TA, and a sustain period TS.

The reset period TR is a period in which the dummy lines and the wall charges of all the display lines are erased in order to prevent the influence of the lighting state before it. In the reset period TR, by applying the reset voltage simultaneously between the dummy electrode DX and the dummy electrode DY and between all the sustain electrode X and the scan electrode Y, unnecessary charges of each light emitting cell are generated. Erased.

The address period TA is a period in which address discharge is generated in the light emitting cells to emit light based on the display data, and wall charges are accumulated in the light emitting cells. In the address period TA, the dummy electrode DX and the sustain electrode X are biased to the potential against the ground potential. In this state, a negative polarity scan pulse voltage of the crest value Vy is applied to the scan electrode Y from the display line at one end of the effective display area S toward the display line at the other end. It is sequentially applied (scanned) (in Fig. 4, the scanning direction is indicated by an arrow). That is, referring to FIG. 4, the scan pulse voltage is applied to the scan electrode Y (1) of the display line (scan start line) on the upper end side at the beginning of the address period TA, and the end of the address period TA is applied. The scan pulse voltage is applied to the scan electrode Y (n) of the display line (scan end line) on the lower end side. In the present embodiment, since the dummy electrode DY and the scan electrode Y (1) are connected by the wiring 50, the scan pulse voltage to the dummy electrode DY and the scan electrode Y (1). The application of is done at the same time. In synchronism with the application of the scan pulse voltage, a positive polarity address pulse voltage of the peak value Va is applied to the address electrode A corresponding to the light emitting cell to emit light. Here, in the light emitting cell to which the address pulse voltage is applied, address discharge is generated between the address electrode A, the dummy electrode DY, and the scan electrode Y, and wall charges are accumulated. Since the dummy electrode DX and the sustain electrode X are biased at an electrostatic potential of the same polarity as the address pulse voltage, the address pulse voltage is canceled, so that the dummy electrode DX, the sustain electrode X, the address electrode A, The discharge does not occur between.

The sustain period TS is a period in which the selected light emitting cells emit light. In the sustain period TS, the dummy electrodes DY and all the scan electrodes Y and the dummy electrodes DX and all the sustains are biased while all the address electrodes A are biased to the electrostatic potential with respect to the ground potential in order to prevent counter discharge. The positive sustain pulse voltage of the crest value Vs is alternately applied to the electrode X. As a result, only the light emitting cells in which the wall charges are accumulated discharge light. The number of sustain pulses applied in the sustain period TS is determined corresponding to the importance of luminance in the subfield SF.

One subfield SF is completed by performing these reset period TR, address period TA, and sustain period TS, and eight subfields SF are repeated to display one frame. Is done. Here, gray level display of three colors of RGB is possible by controlling the number of discharge light emission by the sustain pulse per frame for each light emitting cell. Subsequently, display of one frame is continued to display a moving image on the front surface of the substrate 20.

In the present embodiment, in the address operation in the address period TA, a scan pulse voltage is applied to the dummy electrode DY simultaneously with the scan electrode Y (1) of the scan start line. When the address operation of two lines of the dummy line and the scan start line is simultaneously performed in this manner, priming particles are supplied to each other between adjacent cells of the two lines to impart a priming effect. Therefore, the probability that an address discharge occurs in the scan start line can be increased. In addition, since the dummy line and the scan start line are simultaneously scanned, the address period TA does not increase by providing the dummy line (dummy electrode pair 40).

In addition, since the width of the metal electrode 402 constituting the dummy line (dummy electrode pair 40) is larger than the width of the bus electrode 302 of the display electrode pair 30, the scan starts in the dummy line. The discharge start voltage is lower than that of the line, and the discharge start time (discharge delay) is shortened. As a result, in the dummy line, the discharge probability of the address discharge can be increased as compared with the scan start line. As described above, when the discharge probability of the address discharge in the dummy line (dummy electrode pair 40) increases, the supply of priming particles to the adjacent scan start line is appropriately performed to increase the discharge probability of the address discharge in the scan start line. Can be. If the discharge probability of the address discharge in the scan start line can be increased, the supply of priming particles to the adjacent display lines is appropriately performed. This is repeated with the progress of the address operation, and the priming particles are sequentially supplied to adjacent display lines. As a result, address discharge is stably performed in all the display lines of the effective display area S, and discharge misses in the area S are effectively prevented.

In the present embodiment, the width W4 of the gap portion between the dummy electrode pair 40 and the display electrode pair 30 serving as the scan start line adjacent thereto is smaller than the width W2 of the slit between the display electrode pairs. Further, the dummy electrode Y1 and the scan electrode Y (1) of the scan start line are arranged to be adjacent to each other. That is, the distance between the dummy electrode DY and the scan electrode Y (1) that is involved in the address discharge is significantly shorter than the distance between the scan electrodes Y of adjacent display lines. Therefore, during the address operation, priming particles are supplied from the dummy line to the scan start line more reliably. This is preferable in order to increase the discharge probability of the address discharge in the scan start line.

In the present embodiment, since the width W3 of the discharge slit of the dummy electrode pair 40 is smaller than the width W1 of the discharge slit of the display electrode pair 30, the wall charge is erased by applying the reset voltage. Is more appropriately performed. This is preferable in order to prevent problems such as mis-discharge and to generate the address discharge more appropriately.

In the present embodiment, the metal electrode 402 which does not substantially transmit visible light is formed in the dummy electrode pair 40 in a wide range. According to such a structure, the dummy electrode pair 40 can function as a light shielding film.

In addition, in the present embodiment, the dummy electrode DY and the scan electrode Y (1) are connected via the wiring 50 so that the voltage is applied at the same time. Similarly, the dummy electrode DX and the sustain electrode X (1) are connected to each other via the wiring 51, so that a voltage is applied at the same time. Therefore, in such a structure, it is not necessary to make any change to the drive IC connected to each electrode compared with the case where dummy electrodes DX and DY are not provided.

As mentioned above, although the Example of this invention was described, the scope of the present invention is not limited to the Example mentioned above. The specific configuration of the three-electrode surface discharge display device according to the present invention can be changed in various ways without departing from the spirit of the invention. For example, the present invention can be applied to a three-electrode surface discharge display device having another configuration such as a plasma display panel (PDP).

In the above embodiment, the dummy electrode DY and the scan electrode Y (1) of the display line adjacent thereto are connected by the wiring 50, but may be electrically connected by a method different from this. For example, the dummy electrode DY and the scan electrode Y (1) may be connected by a drive circuit.

The number of dummy electrode pairs provided outside the effective display area can be two or more. In addition, when the effective display area is divided into two areas (the first and second partial display areas), and the address operation is separately performed in parallel with the two areas simultaneously, the dummy electrode pairs are displayed in the first partial display. The outside of the area and the outside of the second partial display area may be provided respectively. In this case, if the address operation is performed from the end of the effective display area toward the center in each of the first and second partial display areas, the same effects as described in the above embodiments can be obtained in both partial display areas.

Claims (9)

A discharge tube group in which a plurality of discharge tubes extending in a linear shape having a predetermined length are installed side by side to form a panel as a whole; A plurality of display electrode pairs arranged on one surface of the discharge tube group so as to intersect with the longitudinal direction of each discharge tube, each of the pairs of scan electrodes and sustain electrodes each having parallel discharge slits of a predetermined width therebetween; And an address electrode arranged on the other side of the discharge tube group along the longitudinal direction of each discharge tube, In a three-electrode surface discharge type display device in which slits are formed between display electrode pairs having a predetermined width by each adjacent display electrode pair, and an effective display region is formed by the discharge tube group and the plurality of display electrode pairs. Outside the effective display area, dummy electrode pairs each including a pair of first and second electrodes corresponding to the scan electrode and the sustain electrode are provided in parallel with the display electrode pair on one end of the effective display area. It is, A three-electrode surface discharge display device, characterized in that the first electrode and the scan electrode constituting the display electrode pair on the one end side are electrically connected. The scan electrode and the sustain electrode constituting the display electrode pairs each have a relatively wide transparent electrode, a relatively narrow width and good conductivity, and the discharge in the transparent electrode. A bus electrode disposed at one end spaced apart from the slit, The 1st and 2nd electrode which comprises the said dummy electrode pair is equipped with the metal electrode with more electroconductivity than the said transparent electrode, A three-electrode surface discharge display device in which the width of the first electrode is larger than the width of the bus electrode. The three-electrode surface discharge display device according to claim 1, wherein the width of the discharge slits of the dummy electrode pair is smaller than the width of the discharge slits of the display electrode pair. The three-electrode surface discharge display device according to claim 2, wherein the visible light transmittance of the dummy electrode pair is smaller than the visible light transmittance of the display electrode pair. The three-electrode surface discharge display device according to claim 1, wherein the scan electrode constituting the first electrode and the display electrode pair on the one end side are connected by wiring. The three-electrode surface discharge type display device according to claim 1, wherein the scan electrode constituting the first electrode and the display electrode pair on the one end side are connected by a driving circuit. The three-electrode surface discharge type display device according to claim 1, wherein the width of the gap portion between the dummy electrode pair and the display electrode pair on the one end is smaller than the width of the slit between the display electrode pairs. The three-electrode surface discharge display device according to claim 1, wherein the scan electrodes constituting the first electrode and the display electrode pair on the one end side are disposed adjacent to each other. A discharge light emitting element group in which a plurality of discharge light emitting elements extending in a linear shape having a predetermined length are provided side by side to form a panel as a whole; A plurality of display electrodes arranged on one surface of the discharge light emitting element group so as to intersect with the longitudinal direction of each discharge light emitting element, each consisting of a pair of scan electrodes and sustain electrodes sandwiching discharge slits of a predetermined width in parallel to each other. pair; And an address electrode arranged on the other side of the discharge light emitting element group along the longitudinal direction of each discharge light emitting element, In a three-electrode surface discharge type display device in which slits are formed between display electrode pairs having a predetermined width by each adjacent display electrode pair, and an effective display area is formed by the discharge light emitting element group and the plurality of display electrode pairs. Outside the effective display area, dummy electrode pairs each including a pair of first and second electrodes corresponding to the scan electrode and the sustain electrode are provided in parallel with the display electrode pair on one end of the effective display area. It is, A three-electrode surface discharge display device, characterized in that the first electrode and the scan electrode constituting the display electrode pair on the one end side are electrically connected.

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