EP0404645B1 - Plasma-Anzeigetafel mit abgegrenzten Entladungsbereichen - Google Patents

Plasma-Anzeigetafel mit abgegrenzten Entladungsbereichen Download PDF

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Publication number
EP0404645B1
EP0404645B1 EP90401675A EP90401675A EP0404645B1 EP 0404645 B1 EP0404645 B1 EP 0404645B1 EP 90401675 A EP90401675 A EP 90401675A EP 90401675 A EP90401675 A EP 90401675A EP 0404645 B1 EP0404645 B1 EP 0404645B1
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EP
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Prior art keywords
electrodes
addressing
maintenance
electrode
hold
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Expired - Lifetime
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EP90401675A
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English (en)
French (fr)
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EP0404645A1 (de
Inventor
Serge Salavin
Jacques Deschamps
Michel Gay
Michel Specty
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Thales Electron Devices SA
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Thomson Tubes Electroniques
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
    • H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/22—Electrodes, e.g. special shape, material or configuration
    • H01J11/32—Disposition of the electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/22—Electrodes
    • H01J2211/32—Disposition of the electrodes
    • H01J2211/323—Mutual disposition of electrodes

Definitions

  • the invention relates to plasma panels of the coplanar maintenance type, and it particularly relates to means for confining in predetermined zones the discharges in the gas.
  • Plasma panels are flat screen display devices, now well known, which allow the display of alphanumeric, graphic or other images, in color or not.
  • Generally plasma panels include two insulating tiles limiting a volume occupied by a gas (generally a mixture based on neon). These slabs support conductive electrodes arranged in columns and in lines, so as to be crossed and to define a matrix of cells, each cell forming an elementary image or pixel surface (a cell being the gas space substantially comprised between two electrodes crossed).
  • the operating principle is the selective generation (at the intersection of line electrodes and column electrodes, that is to say at the level of selected pixels) of electric discharges in the gas. The visualization of the information is ensured by a light emission which accompanies these discharges.
  • Some plasma panels operate continuously, but it is more often preferred to use panels of the so-called “alternative” type, the operation of which is based on excitation in alternating conditions of the electrodes.
  • the electrodes are covered with a layer of dielectric material, and they are no longer in direct contact with the gas or with the discharge.
  • One of the advantages of this type of so-called “alternative” plasma panels is that it has a memory effect which allows useful information to be addressed only pixels whose state you want to change (on or off). For the other pixels, their state is simply maintained by repeating alternating electrical discharges, called maintenance discharges, discharges which are obtained only at the level of the pixels which are in the on state.
  • each pixel of the matrix is constituted by at least three electrodes, more precisely at the intersection between an addressing electrode with two parallel maintenance electrodes forming a pair of maintenance electrodes.
  • the maintenance of the discharges that is to say the repetition of the alternating discharges previously mentioned, is ensured between the two maintenance electrodes of the same pair, and the addressing of a given pixel is produced by generation of discharge between two crossed electrodes, one of which is the addressing electrode, and the other of which is one of the two electrodes of the pair of maintenance electrodes.
  • the addressing electrode only fulfills an addressing function and is most often arranged in the direction of the columns.
  • the maintenance electrodes are parallel and most often arranged in the direction of the lines, and among the two electrodes of the same pair of maintenance electrodes: one is called address-maintenance electrode and it fills a addressing function in cooperation with the addressing electrode, and it fulfills on the other hand a maintenance function in cooperation with the second maintenance electrode of the same pair; the second maintenance electrode is called "maintenance electrode only" and it fulfills only a discharge maintenance function.
  • Plasma panels with coplanar maintenance have many advantages, but also raise some difficulties, in particular with regard to individualization or limitation of discharges throughout the electrodes.
  • the maintenance electrodes a shape such that they each have a protrusion or protruding surface capable of promoting discharge: in the same pair of maintenance electrodes, the protruding surfaces of one electrode are oriented towards those of the other electrode so that, at a pixel level, the protruding surfaces of the two electrodes are opposite one another, aligned on the same axis identical or parallel to the axis of the addressing electrode which intersects them, so that the distance between the protruding parts of the two electrodes are smaller than the distance between the electrodes themselves (of the same pair), which tends to delimit between the two projecting surfaces the area of the start of maintenance discharges.
  • FIG. 1 schematically and partially shows a plasma panel with coplanar maintenance as described in patent document EP-A-135 382, a panel which is mainly represented by addressing electrodes and maintenance electrodes, and which allows a better understanding of the problem posed.
  • the plasma panel 1 in FIG. 1 comprises addressing electrodes X1, X2 arranged in columns, and pairs of maintenance electrodes p1, p2 arranged in lines. To simplify the figure, only two addressing electrodes X1, X2 and only two pairs of maintenance electrodes p1, p2 are shown, and consequently only four pixels PX1 to PX4 are shown.
  • the pairs p1, p2 of maintenance electrodes each comprise a addressing-maintenance electrode Y1, Y2 and a maintenance-only electrode E1, E2.
  • the addressing electrodes X1, X2 are perpendicular to the pairs p1, p2 of maintenance electrodes and in the example shown in FIG. 1, the addressing electrodes X1, X2 are represented in a plane less deep than the plane in which are arranged the pairs p1, p2 of maintenance electrodes; also, the pairs p1, p2 of maintenance electrodes appear seen through the address electrodes X1, X2 in the part where they are crossed with the latter, and for greater clarity of the figure the address electrodes X1 , X2 are shown in dotted lines. It should be noted that such an arrangement corresponds to the most common conventional structure, in which the discharges in the gas are partially masked by the addressing electrodes or seen through the latter when these are transparent.
  • each of the electrodes of each pair p1, p2 of maintenance electrodes is provided with a recess or protuberance or projecting surface. These surfaces are marked SA1, SA2 for the addressing-maintenance electrodes Y1, Y2, and marked SE1, SE2 for the maintenance-only electrodes E1, E2.
  • projecting surfaces SA1, SA2, SE1, SE2 are all formed in the same way for each pixel, and taking for example the first pixel PX1, formed at the intersection of the first addressing electrode X1 and the first pair p1, the first addressing-maintenance electrode Y1 and the first maintenance only electrode E1 respectively have a projecting surface SA1 and a projecting surface SE1 which are oriented towards one another, opposite and aligned on the same axis X1 which constitutes the axis of the first addressing electrode X1. There is a similar arrangement at the level of the other pixels PX2, PX3, PX4.
  • the opposite ends of the projecting surfaces SA1, SE1 are at a distance D less than the distance which is necessary to initiate a discharge between these two projecting parts SA1, SE1, taking into account the difference potential V which is applied to these two projecting surfaces, that is to say which is applied between the two electrodes of each pair p1, p2 of maintenance electrodes.
  • the electrodes and the projecting parts are isolated by dielectric layers, and during a maintenance discharge, electric charges are deposited on the dielectric layers and create an internal electric field which opposes the electric field induced between the two. electrodes of the same pair, by the voltage pulses of opposite polarity which are applied to the two electrodes of the same pair p1, p2 of maintenance electrodes.
  • the internal field created by these charges increases until causing the end of the discharge, that is to say the extinction of the pixel. But the cell or pixel keeps in memory the internal field previously acquired, and for the next maintenance discharge, this internal field promotes the initiation of the discharge, by adding to the internal electric field which results from application to the electrodes.
  • maintenance voltage maintenance pulse whose polarities are reversed compared to the previous time.
  • Positive charges + are mainly deposited on the protruding surface SE1, but also on a part of the maintenance only E1 electrode near this protruding surface, and negative charges - are mainly fixed on the edges of the protruding surface SA1 , but also on a part of the addressing-maintenance electrode Y1 near this projecting surface SA1; these positive and negative charges being generated until the end of the discharge.
  • the distance D which separates the two projecting surfaces SA1, SE1 in a pixel PX1 being less than a distance D1 which separates the maintenance addressing electrode Y1 from the maintenance only electrode E1
  • the potential difference between these two electrodes determines equipotential lines marked a, b, c, which correspond respectively for example to + V / 2, to zero Volt, to -V / 2, and which are much more tightened between the parts opposite the projecting surfaces SA1, SE1 than along the electrodes outside these opposite parts, that is to say for example in the direction of the second projecting surfaces SA2, SE2, of the second pixel PX2. Consequently, the forces exerted on these positive and negative charges +, - may be insufficient to prevent these charges from spreading towards the second pixel PX2 during the ionization of the gas.
  • the present invention relates to a plasma panel having maintenance electrodes provided with projecting surfaces, the arrangement of which allows both better confinement of the discharges, and an increase in the luminance of each pixel.
  • the solution of the invention is of simple implementation and inexpensive, which can be applied in the case of all plasma panels with coplanar maintenance.
  • the invention relates to a plasma panel as claimed in claim 1.
  • FIG. 2 schematically shows electrodes which symbolize a plasma panel 10 according to the invention.
  • the panel 10 is formed of addressing electrodes X1, X2, X3 which fulfill only an addressing function.
  • the panel 10 further comprises maintenance electrodes which are formed on the one hand, by electrodes addressing-maintenance Y1, Y2, and on the other hand, by electrodes called maintenance only E1, E2.
  • Each addressing-maintenance electrode Y1, Y2 is associated with a maintenance-only electrode E1, E2 so as to constitute a pair p1, p2 of maintenance electrodes.
  • the pairs p1, p2 are mutually parallel and perpendicular to the addressing electrodes X1 to X3, and crossed with the latter.
  • the addressing-maintenance electrodes Y1, Y2 and the solely maintenance electrodes E1, E2 have protruding surfaces which, in the same pair p1, p2 and in the same pixel PX1 to PX6, are arranged along different axes, transverse to the pairs p1, p2.
  • an addressing electrode X1 to X3 can cross only a projecting surface.
  • the first addressing-maintenance electrode Y1 is provided with a projecting surface SB1 which is oriented towards the electrode only of maintenance E1 of this pair of electrodes p1; on the other hand, the first electrode E1 is also provided with a projecting surface SC1 which is oriented towards the first addressing-maintenance electrode Y1.
  • the first addressing electrode X1 crosses the first projecting surface SB1 of the electrode Y1, the latter being situated along the same axis x1 as the first addressing electrode X1.
  • the protruding surface SC1 that the first electrode has only maintenance E1 is located on an x′1 axis parallel to the x1 axis.
  • These two projecting surfaces SB1, SC1 belonging to the first pixel PX1 have a length L1 parallel to the addressing electrode X1, which preferably (but not necessarily) is greater than half the distance D1 which separates the inner edges respectively 11, 12 of the addressing-maintenance electrodes and only maintenance Y1, E1 belonging to the first pair P1.
  • the second pixel PX2 formed at the intersection of the second addressing electrode X2 and the first pair p1 is constituted in the same way as the first pixel PX1: the first addressing-maintenance electrode Y1 is provided with a second surface projection SB2 aligned on an axis x2 of the second addressing electrode X2; the maintenance-only electrode E1 also has a second projecting surface SC2 arranged along an axis x′2 parallel to the axis x2 of the addressing electrode X2.
  • the third pixel PX3 at the intersection of the third addressing electrode X3 and the first pair p1, is formed in a manner similar to that of the first and second pixels PX1, PX2: the first addressing-maintenance electrode Y1 comprises a third projecting surface SB3 aligned on an axis x3 of the third addressing electrode X3; and the first maintenance only electrode E1 also has a third projecting surface SC3 aligned on an axis x′3 parallel to the third addressing electrode X3.
  • all of these projecting surfaces have the same length L1, and the same width L2 parallel to the maintenance electrodes.
  • the two projecting surfaces SB1 to SB3, SC1 to SC3 of the same pixel are at a distance d1 from one another significantly less than the distance d2 which separates two consecutive projecting surfaces but belonging to pixels different.
  • the projecting parts SB1 to SB3, SC1 to SC3 belonging to the addressing and maintenance electrode Y1, Y2 and the only maintenance electrode E1, E2 are not face to face as in the prior art, but offset, in such a way that in the pixels, these projecting surfaces make it possible to form a channel C (delimited in FIG. 2 in thicker lines) having a relatively small width , formed for at least part by the distance d1, which can correspond for example to the distance which in the prior art separates the opposite ends from the projecting surfaces.
  • the length of these opposite projecting surfaces is relatively short, and it is much greater in the configuration of the invention where the average length of the channel C corresponds substantially to the addition of two widths L2 and of a length L1 of projecting surfaces, plus a distance d1 between two projecting surfaces in the same pixel.
  • This has the effect of increasing the length of the surfaces by look, and therefore to improve the operation, in particular because the potential difference required between the two electrodes of a pair p1, p2 of maintenance electrodes is reduced.
  • FIG. 2 This is illustrated in FIG. 2 at the level of the fifth pixel PX5, and between the latter and the sixth pixel PX6. It is observed that for a potential difference, applied between the addressing-maintenance electrodes Y1, Y2 and only maintenance electrodes E1, E2, equal to that which is applied in the prior art shown in FIG. 1, the equipotential lines a , b, c which are generated between these electrodes in the configuration of the invention, exist in the channel C with as high a concentration as between the surfaces opposite the case of the prior art (shown in FIG.
  • the potential V applied between the addressing-maintenance electrodes Y1, Y2 and the solely maintenance electrodes E1, E2 causes a discharge in the fifth pixel PX5, between the facing surfaces which border the channel C; these surfaces being delimited in FIG. 2 by thicker lines marked 30, 31, lines which constitute the edges of channel C.
  • the negative charges - are fixed at the first edge 30 of channel C which is of positive polarity the fact that it belongs to a addressing-maintenance electrode Y1, Y2, and positive charges + are accumulated on the second edge 31 which is of negative polarity because it belongs to a maintenance-only electrode E1 , E2.
  • the third projecting surface SB3 which belongs to the second addressing-maintenance electrode Y2, due to its proximity and its position, tends to repel positive charges + which would tend to migrate towards the sixth pixel PX6 ; in the same way, the first projecting surface SC1 which in the fourth pixel PX4 belongs to the second solely maintenance electrode E2 repels negative charges - which would tend to migrate towards the fourth pixel PX4.
  • the offset of the projecting parts in the panel of the invention makes it possible to bring the two electrodes of the same pair p1, p2 closer to each other, which optionally allows, for the same panel dimensions, placing more pairs of service electrodes, and thereby increasing the resolution.
  • the main axis along which the discharges take place is substantially parallel to the addressing electrodes or column electrodes, while in the plasma panel of the invention, this main axis marked XP s '' performs substantially at an angle of 45 ° to the addressing electrodes or column electrodes X1, X2, X3, which tends to modify the shape of the pixels in the panel of the invention compared to a pixel in the art anterior, and consequently to slightly degrade the alignment of the pixels in the direction of the columns; but this defect remains entirely minor in view of the importance of the improvements obtained in the panel of the invention.
  • FIG. 3 illustrates an application of the invention in the case where the plasma panel 10 comprises pairs of maintenance electrodes p1, p2, p3, p4 formed by an arrangement in which two electrodes solely for maintenance are followed by two addressing-maintenance electrodes, themselves followed by two maintenance-only electrodes, etc.
  • FIG. 3 only two addressing electrodes X1, X2 or column electrodes are shown, crossed with four pairs of electrodes p1, p2, p3, p4.
  • the only maintenance electrodes E1 to E4 are all brought at the same times to the same potentials, and consequently they can be electrically connected to each other on the side not only of their first end 30 by a link 31 (shown in lines dashed), but also on the side of their second end 32, as shown in FIG. 3 where they are connected by a connecting conductor 33. Because two electrodes which are only consecutive maintenance are connected to each other on the side of their two ends 30, 32, part of one of these two electrodes, located after a cut (not shown), would remain supplied on the side of the second end 32. It should also be noted that these two electrodes could be combined into a single electrode E′1, E′3 by filling the space between these two electrodes with conductive material.
  • the pixels PX1 to PX8 are each formed substantially at the intersection of an addressing electrode X1, X2 with a pair p1 to p4 of maintenance electrodes.
  • pairs p1 to p4 are arranged according to a pitch P ′ which plays on the image resolution, and the fact of arranging the projecting parts SB1, SB2 and SC1, SC2 of the same pixel in an offset manner, in accordance with the principle of the invention, increases the distance between two consecutive pixels in the direction of the addressing electrodes X1, X2, without losing image resolution.
  • the projecting parts SB1, SB2 which belong to the addressing-maintenance electrodes Y1 to Y4 are aligned on the axes x1, x2 of the addressing electrodes X1, X2.
  • these projecting parts belonging to the first of these two electrodes are arranged so as to be offset on a first side of the addressing electrodes X1, X2, and the projections belonging to the next electrode are arranged on the opposite side.
  • the projecting surfaces SB1, SB2 of the addressing-maintenance electrodes Y1 to Y4 are aligned on the axes x1, x2, of the addressing electrodes X1, X2.
  • the first and second solely maintenance electrodes E1, E2 constitute a group E′1 of two successive maintenance electrodes or constitute a single electrode as has been said above, and the projecting surfaces SC1, SC2, which belong to the first maintenance only electrode E1, are arranged aligned respectively on axes xa1, xa2, situated on one side of the addressing electrodes X1, X2, while the projecting surfaces SC1, SC2, which belong to the second maintenance only electrode E2 are arranged on an opposite side, namely aligned on axes x′1, x′2, as in the example in FIG.
  • the third and fourth electrodes maintenance only E3, E4 form another group E′3 of two consecutive maintenance-only electrodes, and the projecting surfaces SC1, SC2 of the third maintenance-only electrode E3 are arranged in the same way as in the case of the first maintenance-only electrode E1, while the protruding surfaces SC1, SC2 of the fourth maintenance-only electrode E4 are arranged in the same way as the protruding surfaces of the second e maintenance only electrode E2.
  • the result of this arrangement is a staggered arrangement of the pixels PX1 to PX8 which tends to increase the distance between the pixels in the direction of the addressing electrodes, which makes it possible to obtain better confinement of the discharges without increasing the pitch P ′ between the pairs p1 to p4.
  • FIG. 4 schematically shows another embodiment of a plasma panel 10, with three electrodes per pixel.
  • each pixel has a single projecting surface which, for a given pixel belongs to one of the electrodes of the pair of maintenance electrodes, and which, for a next pixel along the same pair of 'maintenance electrodes, belongs to the other maintenance electrode.
  • the first pair p1 is formed by the first addressing-maintenance electrode Y1 and by the first maintenance electrode E1
  • the second pair p2 is formed by the second addressing-maintenance electrode Y2 and by the second electrode only d interview E2.
  • the first pixel PX1 formed at the intersection of the first addressing electrode X1 and the first pair p1, comprises a single protruding part SB1 which belongs to the addressing-maintenance electrode Y1. Consequently, the maintenance discharge in the first pixel PX1 occurs between this projecting surface SB1 and directly the only maintenance electrode E1, more precisely by a part Se of the latter symbolized by hatching in FIG. 4, part which is located opposite the projecting surface SB1.
  • the second pixel PX2 there is also a single protruding part SC1, but which this time belongs to the maintenance only electrode E1, and the third pixel PX3 is constituted as the first pixel PX1,
  • qu '' a single projecting surface exists per pixel, we find the principle according to which the two projecting parts closest to two consecutive pixels, along the same pair of maintenance electrodes, belong one to an electrode of addressing-maintenance and the other to a maintenance-only electrode, which makes it possible to obtain the technical effects already described with reference to FIG. 2.
  • the absence of a projecting surface belonging to the first addressing-maintenance electrode Y1 in the second pixel PX2, means that the maintenance discharge occurs between the first addressing-maintenance electrode Y1 itself and the projecting part SC1 which belongs to the first maintenance only E1 electrode.
  • the third pixel PX3 we find the same structure as for the first pixel PX1, namely that the first addressing-maintenance electrode Y1 is provided with a protruding surface SB3 aligned on the axis x3 of the third addressing electrode X3, the first maintenance-only electrode E1 having no protruding surface at this third pixel PX3.
  • the pixels PX4, PX5, PX6 can be formed respectively in the same way as the first, second and third pixels PX1, PX2, and PX3.
  • this addressing can be done in the same way as in the case of the previous examples for pixels whose sole projecting surface belongs to an addressing-maintenance electrode Y1, Y2, as this is the case for pixels PX1, PX3, PX4, PX6.
  • the addressing may require a higher addressing voltage for these pixels than for the others, of the the fact that for these pixels the addressing electrode Y1, Y2 has, opposite the addressing electrode X2, a surface Sa1, Sa2 reduced by the fact that it does not include the surface provided by the projecting surfaces.
  • this difference in addressing voltage can be made up, for example as it is conventional to do in the case where it is desired to compensate for a disparity between two cells, disparity due for example to a difference in the nature of phosphors in the case of a color type plasma panel.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Claims (4)

  1. Plasma-Tafel mit koplanarer Erhaltung, die Adressierelektroden (X1, X2, X3) enthält, die mit paarweise (p1, p2) angeordneten Erhaltungselektroden gekreuzt sind, wobei jedes Paar von Erhaltungselektroden durch eine Adressier-Erhaltungs-Elektrode (Y1, Y2) und eine reine Erhaltungselektrode (E1, E2) gebildet ist, ein Pixel (PX1 bis PX6) im wesentlichen bei jeder Kreuzung einer Adressierelektrode (X1, X2, X3) mit einem Paar (p1, p2) von Erhaltungselektroden gebildet ist, und wobei jede der beiden Elektroden (Y1, E1) eines gleichen Paares (p1) auf dem Niveau jeden Pixels (PX1 bis PX6) eine vorstehende Oberfläche (SB1 bis SB3, SC1, SC3) enthält, die zu der anderen Elektrode orientiert ist, dadurch gekennzeichnet, daß die beiden vorstehenden Oberflächen (SB1 bis SB3, SC1 bis SC3) eines gleichen Paares (p1, p2) gegeneinander versetzt und entlang unterschiedlicher Axen (x1, x′1) angeordnet sind, derart, daß zwischen zwei aufeinanderfolgenden Pixeln (PX1 bis PX6) eines gleichen Paares (p1, p2) von den beiden am nächsten beieinanderliegenden vorstehenden Oberflächen die eine zu einer Adressier-Erhaltungs-Elektrode (Y1, Y2) und die andere zu einer reinen Erhaltungselektrode (E1, E2) gehört.
  2. Plasma-Tafel nach Anspruch 1, dadurch gekennzeichnet, daß die vorstehenden Oberflächen (SB1, SC1) parallel zu den Adressierelektroden (X1, X2, X3) eine Länge (L1) besitzen, die größer als die Hälfte eines Abstandes (D1) ist, der die beiden Elektroden (Y1, E1) eines gleichen Paares (p1, p2) von Erhaltungselektroden trennt.
  3. Plasma-Tafel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Adressierelektroden (X1, X2, X3) die Paare (p1, p2) von Erhaltungselektroden über einer vorstehenden Oberfläche (SB1, SB2, SB3) kreuzen, die zu einer Adressier-Erhaltungs-Elektrode (Y1, Y2) gehört.
  4. Plasma-Tafel nach einem der vorhergehenden Ansprüche, wobei die Erhaltungselektroden (Y1 bis Y4, E1 bis E4) gemäß einer Folge von zwei Adressier-Erhaltungs-Elektroden (Y1 bis Y4), gefolgt von zwei reinen Erhaltungselektroden (E1 bis E4), angeordnet sind, derart, daß zwei aufeinanderfolgende reine Erhaltungselektroden (E1 bis E4) dazu dienen, zwei aufeinanderfolgende Paare (p1, p2) zu bilden, und derart, daß diese beiden Elektroden gegebenenfalls eine einzige, diesen beiden aufeinanderfolgenden Paaren (p1, p2) gemeine Elektrode (E′1) bilden, dadurch gekennzeichnet, daß die zu den Adressier-Erhaltungs-Elektroden (Y1 bis Y4) gehörenden vorstehenden Oberflächen (SB1, SB2, SB3) im wesentlichen auf einer gleichen Axe (x1, x2, x3) wie die Adressierelektroden (X1, X2, X3) ausgerichtet sind, während bei den vorstehenden Oberflächen (SC1, SC2, SC3) der reinen Erhaltungselektroden (E1 bis E4), die eine Gruppe (E′1; E′3) von zwei aufeinanderfolgenden Elektroden bilden, die vorstehenden Oberflächen (SC1 bis SC3) der ersten dieser beiden Elektroden auf einer ersten Seite der Axen (x1, x2, x3) der Adressierelektroden (X1 bis X3) angeordnet sind und die vorstehenden Oberflächen (SC1 bis SC3) der zweiten Elektrode auf der Seite angeordnet sind, die der ersten gegenüberliegt.
EP90401675A 1989-06-23 1990-06-15 Plasma-Anzeigetafel mit abgegrenzten Entladungsbereichen Expired - Lifetime EP0404645B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908386A FR2648953A1 (fr) 1989-06-23 1989-06-23 Panneaux a plasma a zones de decharges delimitees
FR8908386 1989-06-23

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EP0404645A1 EP0404645A1 (de) 1990-12-27
EP0404645B1 true EP0404645B1 (de) 1995-01-25

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EP (1) EP0404645B1 (de)
JP (1) JP3100387B2 (de)
DE (1) DE69016280T2 (de)
FR (1) FR2648953A1 (de)

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DE69016280D1 (de) 1995-03-09
FR2648953A1 (fr) 1990-12-28
DE69016280T2 (de) 1995-05-24
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US5066890A (en) 1991-11-19
EP0404645A1 (de) 1990-12-27
JP3100387B2 (ja) 2000-10-16

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