EP1344208B1 - Image display device consisting of a plurality of silent gas discharge lamps - Google Patents

Image display device consisting of a plurality of silent gas discharge lamps Download PDF

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Publication number
EP1344208B1
EP1344208B1 EP01271620A EP01271620A EP1344208B1 EP 1344208 B1 EP1344208 B1 EP 1344208B1 EP 01271620 A EP01271620 A EP 01271620A EP 01271620 A EP01271620 A EP 01271620A EP 1344208 B1 EP1344208 B1 EP 1344208B1
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Prior art keywords
gas discharge
image display
display device
discharge lamps
discharge lamp
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German (de)
French (fr)
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EP1344208A2 (en
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Udo Custodis
Michael Seibold
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Osram GmbH
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Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/313Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being gas discharge devices

Definitions

  • This invention relates to a silent gas discharge lamp Image display device.
  • Silent gas discharge lamps are known per se and have by definition between at least the anode (s) and the discharge medium a dielectric layer, but in the bipolar case they are all Electrodes impeded dielectric.
  • Silent discharge lamps as such are known. They are for different uses of interest, especially for backlighting displays in Flat screens and the like.
  • the design is for this area of application known as a so-called flat radiator, in which the lamp consists essentially of two there are plane-parallel plates that can be connected by a frame and enclose the discharge medium between them. One of the two plates serves thereby as a light emission surface of the flat radiator.
  • These silent gas discharge lamps are preferably operated using a pulsed operating method operated, with a particularly high efficiency of production of light (UV light or preferably visible light when using Phosphors) can be achieved. Also the details of this operating procedure are State of the art and familiar to the expert; so not here in detail is received.
  • the present invention is based on the technical problem, a new application to be specified for silent gas discharge lamps.
  • the invention relates to an image display device made of a multi-beam Gas discharge lamps, each with a discharge vessel filled with a gas filling, at least two electrodes, a dielectric layer between at least one of the electrodes and the gas filling and a phosphor layer, the Gas discharge lamps are arranged side by side to form a surface that
  • Image display is colored and the gas discharge lamps emit different colors can.
  • the single silent discharge lamp is not use as a backlight lamp for a display, as is conventional happens, but from the discharge lamp itself an element of the actual To make image display.
  • an image display device that is, a display, is to be used a large number of silent gas discharge lamps arranged next to one another in a planar manner and not only due to the colored operation of the silent discharge lamps a monochrome image information, but one of at least two, preferably three primary colors can be displayed. It is for one conceivable that the individual discharge lamps each form monochrome pixels and a total of one set of juxtaposed different colored pixels multi-color image display is made possible.
  • the individual gas discharge lamp already has the color spectrum of the display and thus as a full color pixel (with two or three primary colors). Then the spatial resolution of the display is in the range of Dimensions of the individual discharge lamp or better. Because it is also possible that the single discharge lamp not only one, but a plurality Forms full color pixels by being spatially subdivided into itself and in different ones adjacent partial areas each contain full color pixels. It is a question the separate operability of partial areas of the discharge lamp and can inexpensive manufacture of large-format silent discharge lamps than a correspondingly larger number of lamps of smaller formats.
  • the two or more pixels in this case within the same lamp must of course be operable independently of each other to total as separate pixels act, so that then on the one hand by the primary color assignment and second, due to the multiple pixels, a complex group structure within the lamp can result. It can also, as in the referenced parallel application explained in more detail by the necessary dimming operation of the individual groups be useful for creating continuous mixed colors, within each one To provide a group of electrode sub-groups with different discharge distances, in order to be able to work with particularly small services.
  • multicolor generation within a single pixel can also be carried out according to a Principle are done in a previous patent application DE 19927791A shown with regard to the backlighting of an LCD display has been.
  • the gas discharge lamp can be sequential in time with successive ones Colors are operated, the frequency of color generation is so high that the human eye actually has an appropriate mixed color perceives. You can do this again, as in the referenced application explained in more detail, a plurality of electrode groups within a gas discharge lamp be provided, which are operated sequentially, or a plurality each discharge lamps assigned to individual colors and to be operated sequentially overall be provided.
  • the light emission surface 1 essentially corresponds the translucent ceiling tile except for the one below explained details of conventional silent flat radiator. It can be seen that the Light emission surface 1 in checkerboard pattern is divided into two partial fluorescent areas 2 and 3.
  • the partial phosphor surfaces 2 and 3 are understood as Sum of the respective light and dark squares, each phosphor partial area 2 and 3 therefore forms half of the light radiation area and is only excited already capable of illuminating the light emission surface 1 essentially completely. Due to the relatively fine checkerboard-like nesting between the phosphor sub-areas 2 and 3 are at a certain observation distance can no longer be resolved with the eye, which of the partial fluorescent areas 2 or 3 Light emission is stimulated.
  • the partial phosphor surface 2 should be one blue shade and the fluorescent surface emit a yellow shade.
  • shades are also in a continuous To represent the green spectrum, which is a mixture of the two primary colors results.
  • the homogeneity can be further strengthened by adding a homogenization the luminance distribution in screen backlighting known per se Diffuser element is connected in front of the discharge lamp, for example a Prism foil or a ground glass.
  • FIG. 2 shows an example of an electrode structure suitable for FIG. 1.
  • the two middle horizontal lines 4 correspond to two anodes, so to speak around these anodes 4 rectangular meandering electrode strips 5 and 6 are apart separately operable cathodes with respective projections 7 for localization of single discharge structures 8.
  • the cathode 5 is listed in dashed order to make it distinguishable from the cathode 6, in fact it is of course one continuous path.
  • FIG. 3 shows a variant of the pattern from FIG. 1, which is designed for three primary colors is.
  • the fluorescent areas are designated 9, 10 and 11 and correspond
  • the primary colors blue at 9, green at 10 and red at 11 a correspondingly constructed gas discharge lamp is in principle able to display full color spectrum.
  • Fig. 1 apply the electrode structure required for the variant in FIG. 3 is naturally somewhat more complex than that shown in Fig. 2 and is not explained here in detail because nothing fundamentally new arises from this.
  • FIG. 4 schematically shows a large-format image display device 12 with a Frame 13, which erects a large-format rectangular flat screen wall 14 and raised above the ground.
  • a large-format image display device 12 could for example in a large sports stadium as an information area find or be mounted as an advertising board, for example on house walls, then of course without the frame 13 shown here.
  • the flat screen wall 14 consists essentially of a large number planar side by side mounted individual gas discharge lamps 15, which correspond to the 1 and 2 or corresponding to Fig. 3 are constructed. As a result, they form full-color pixels for a color representation with two or three primary colors.
  • the graphic image information i.e. light / dark information
  • the flat screen wall 14 should be designed so that the viewer at an assumed observation distance can recognize an overall image and preferably a single image Lamp no longer perceives for itself.
  • the image display device 12 from FIG. 4 can also consist of monochrome, however, differently colored gas discharge lamps 15 can be constructed.
  • at the checkerboard arrangement shown in FIG. 4 corresponds to a pattern the primary colors as in Fig. 1, but with the single square or rectangle now not a very small fluorescent leak, but a complete gas discharge lamp equivalent.
  • the individual gas discharge lamps 15 can also have a shape other than rectangular (in 3 namely as parallelograms with 60 ° and 120 ° angles).
  • the individual gas discharge lamps 15 in Fig. 4 also sequentially in time to operate in order to total (and temporal Mean value) to achieve a full display.
  • the graphic Image information either by controlling the power of the individual lamps 15 or by additional use such as an LCD filter, which the However, costs increased considerably.
  • a major advantage of using silent discharge lamps for image display devices 12 as in Fig. 4 is that with the silent discharge lamps with a reasonable power consumption a very high luminance can be achieved.
  • silent discharge lamps are extremely switch-proof, i.e. well suited for time-varying permanent applications. They also show practical no start-up behavior or temperature dependence of the light output.

Abstract

The invention relates to a preferably large-format image display device that is constructed from a plurality of individual silent gas discharge lamps.

Description

Diese Erfindung bezieht sich auf eine aus stillen Gasentladungslampen aufgebaute Bildanzeigeeinrichtung. Stille Gasentladungslampen sind an sich bekannt und weisen definitionsgemäß zwischen zumindest der oder den Anode(n) und dem Entladungsmedium eine dielektrische Schicht auf, im bipolaren Fall sind jedoch sämtliche Elektroden dielektrisch behindert.This invention relates to a silent gas discharge lamp Image display device. Silent gas discharge lamps are known per se and have by definition between at least the anode (s) and the discharge medium a dielectric layer, but in the bipolar case they are all Electrodes impeded dielectric.

Stille Entladungslampen als solche sind bekannt. Sie sind für verschiedene Anwendungen von Interesse, insbesondere auch zur Hinterleuchtung von Displays in Flachbildschirmen und dergleichen. Für diesen Anwendungsbereich ist die Bauform als sogenannter Flachstrahler bekannt, bei dem die Lampe im wesentlichen aus zwei planparallelen Platten besteht, die über einen Rahmen verbunden sein können und zwischen sich das Entladungsmedium einschließen. Eine der beiden Platten dient dabei als Lichlabstrahlungsfläche des Flachstrahlers.Silent discharge lamps as such are known. They are for different uses of interest, especially for backlighting displays in Flat screens and the like. The design is for this area of application known as a so-called flat radiator, in which the lamp consists essentially of two there are plane-parallel plates that can be connected by a frame and enclose the discharge medium between them. One of the two plates serves thereby as a light emission surface of the flat radiator.

Vorzugsweise werden diese stillen Gasentladungslampen mit einem gepulsten Betriebsverfahren betrieben, mit dem sich eine besonders hohe Effizienz der Erzeugung von Licht (UV-Licht oder vorzugsweise sichtbares Licht bei Verwendung von Leuchtstoffen) erzielen läßt. Auch der Einzelheiten dieses Betriebsverfahrens sind Stand der Technik und dem Fachmann vertraut; so daß hier nicht im einzelnen darauf eingegangen wird. These silent gas discharge lamps are preferably operated using a pulsed operating method operated, with a particularly high efficiency of production of light (UV light or preferably visible light when using Phosphors) can be achieved. Also the details of this operating procedure are State of the art and familiar to the expert; so not here in detail is received.

Es ist ferner bekannt, in einer stillen Gasentladungslampe eine in mehrere Gruppen aufgeteilte Elektrodenanordnung zu verwenden, wobei die Gruppen getrennt voneinander betrieben werden können. Hierdurch ist es beispielsweise möglich, verschiedene Bereiche einer Instrumentenanordnung unabhängig voneinander zu beleuchten und diese Beleuchtung für die verschiedenen Bereiche ein- und ausschalten zu können, wobei insgesamt nur eine Lampe Verwendung findet. Hierbei können die verschiedenen Bereiche der Instrumentenbeleuchtung auch unterschiedlich gefärbt sein, also Leuchtstoffe oder Leuchtstoffmischungen verschiedener Farben Verwendung finden. Es wird verwiesen auf die EP0926705A und US5514934A.It is also known to use one in several groups in a silent gas discharge lamp to use divided electrode arrangement, the groups being separate from one another can be operated. This makes it possible, for example, to use different Illuminate areas of an instrument arrangement independently of one another and to be able to switch this lighting on and off for the different areas, whereby only one lamp is used in total. Here the different Areas of instrument lighting can also be colored differently, that is, use of phosphors or phosphor mixtures of different colors Find. Reference is made to EP0926705A and US5514934A.

Der vorliegenden Erfindung liegt das technische Problem zugrunde, eine neue Anwendungsmöglichkeit für stille Gasentladungslampen anzugeben.The present invention is based on the technical problem, a new application to be specified for silent gas discharge lamps.

Dazu bezieht sich die Erfindung auf eine Bildanzeigeeinrichtung aus einer Vielrahl Gasentladungslampen mit jeweils einem mit einer Gasfüllung gefüllten Entladungsgefäß, zumindest zwei Elektroden, einer dielektrischen Schicht zwischen zumindest einer der Elektroden und der Gasfüllung und einer Leuchtstoffschicht, wobei die Gasentladungslampen planar nebeneinander zu einer Fläche angeordnet sind, dieFor this purpose, the invention relates to an image display device made of a multi-beam Gas discharge lamps, each with a discharge vessel filled with a gas filling, at least two electrodes, a dielectric layer between at least one of the electrodes and the gas filling and a phosphor layer, the Gas discharge lamps are arranged side by side to form a surface that

Bildanzeige farbig ist und die Gasentladungslampen verschiedene Farben abstrahlen können.Image display is colored and the gas discharge lamps emit different colors can.

Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.Preferred embodiments are specified in the dependent claims.

Die Grundidee der Erfindung besteht darin, die einzelne stille Entladungslampe nicht als Hinterleuchtungslampe für ein Display einzusetzen, wie dies konventionellerweise geschieht, sondern aus der Entladungslampe selbst ein Element der eigentlichen Bildanzeige zu machen. Dazu soll eine Bildanzeigeeinrichtung, also ein Display, aus einer Vielzahl planar nebeneinander angeordneten stillen Gasentladungslampen aufgebaut sein und durch einen farbigen Betrieb der stillen Entladungslampen nicht nur eine monochrome Bildinformation, sondern ein aus zumindest zwei, vorzugsweise drei Primärfarben aufgebautes Farbbild angezeigt werden können. Dabei ist es zum einen denkbar, daß die einzelnen Entladungslampen jeweils monochrome Pixel bilden und durch einen Satz nebeneinanderliegender verschiedenfarbiger Pixel insgesamt eine mehrfarbige Bildanzeige ermöglicht wird.The basic idea of the invention is that the single silent discharge lamp is not use as a backlight lamp for a display, as is conventional happens, but from the discharge lamp itself an element of the actual To make image display. For this purpose, an image display device, that is, a display, is to be used a large number of silent gas discharge lamps arranged next to one another in a planar manner and not only due to the colored operation of the silent discharge lamps a monochrome image information, but one of at least two, preferably three primary colors can be displayed. It is for one conceivable that the individual discharge lamps each form monochrome pixels and a total of one set of juxtaposed different colored pixels multi-color image display is made possible.

Bevorzug ist jedoch der Fall, daß die einzelne Gasentladungslampe bereits das Farbspektrum des Displays darstellen kann und somit als Vollfarbpixel (mit zwei oder drei Primärfarben) fungiert. Dann ist die Ortsauflösung der Anzeige im Bereich der Abmessungen der einzelnen Entladungslampe oder besser. Es ist nämlich zudem möglich, daß die einzelne Entladungslampe nicht nur einen, sondern eine Mehrzahl Vollfarbpixel bildet, indem sie in sich räumlich unterteilt ist und in verschiedenen nebeneinanderliegenden Teilflächen jeweils Vollfarbpixel enthält. Dies ist eine Frage der getrennten Betreibbarkeit von Teilbereichen der Entladungslampe und kann bei kostengünstiger Herstellung großformatiger stiller Entladungslampen günstiger sein als eine entsprechend größere Zahl von Lampen kleinerer Formate.However, it is preferred that the individual gas discharge lamp already has the color spectrum of the display and thus as a full color pixel (with two or three primary colors). Then the spatial resolution of the display is in the range of Dimensions of the individual discharge lamp or better. Because it is also possible that the single discharge lamp not only one, but a plurality Forms full color pixels by being spatially subdivided into itself and in different ones adjacent partial areas each contain full color pixels. It is a question the separate operability of partial areas of the discharge lamp and can inexpensive manufacture of large-format silent discharge lamps than a correspondingly larger number of lamps of smaller formats.

Im Bezug auf die einzelne Entladungslampe wird zunächst verwiesen auf eine zeitgleiche Parallelanmeldung WO 02/50873 A der selben Anmelderin mit dem Titel "Stille Entladungslampe mit steuerbarer Farbe", deren Offenbarungsgehalt hiermit in Bezug genommen ist. Kurz zusammengefaßt wird darin dargestellt, wie durch Unterteilung des Elektrodensatzes in der Entladungslampe getrennt betreibbare Elektrodengruppen entstehen können, die jeweils verschiedenfarbigen Leuchtstofftcilflächen zugeordnet sind. Daher kann durch selektiven oder abgestuft gleichzeitigen Betrieb der verschiedenen Elektrodengruppen ein Farbspektrum der Leuchtstoffarben der Leuchtstoffteilflächen und der daraus erzeugbaren Mischfarben abgestrahlt werden. Dabei sollen die Leuchtstoffteilflächen so verschachtelt sein, daß sich insgesamt mit jeder Leuchtstoffteilfläche eine weitgehend homogene Lichtabstrahlung ergibt, also eine Ausleuchtung im wesentlichen der gesamten Lichtabstrahlungsfläche des jeweiligen Pixels. Dieses Pixel kann jedoch einem Teilbereich der Gesamtlichtabstrahlungsfläche der Lampe entsprechen, wobei dann die entsprechenden Leuchtstoffteilflächen und Elektrodengruppen nur innerhalb dieses Teilbereichs verschachtelt sein müssen.With regard to the individual discharge lamp, reference is initially made to a simultaneous one Parallel application WO 02/50873 A by the same applicant with the title "Silent discharge lamp with controllable paint ", the disclosure of which is hereby referred to is. It is briefly summarized, as if by subdivision of the electrode set Electrode groups that can be operated separately arise in the discharge lamp can, which are each assigned to different colored fluorescent areas. Therefore, by selective or graded simultaneous operation of the different Electrode groups a color spectrum of the phosphor colors of the partial phosphor surfaces and the mixed colors that can be generated from it are emitted. The should Partial fluorescent areas to be nested so that overall with each partial fluorescent area results in a largely homogeneous light emission, i.e. illumination essentially the entire light radiation area of the respective pixel. However, this pixel can be a partial area of the total light radiation area correspond to the lamp, in which case the corresponding phosphor partial areas and Electrode groups only need to be nested within this section.

Die in diesem Fall zwei oder mehreren Pixel innerhalb derselben Lampe müssen natürlich unabhängig voneinander betreibbar sein, um insgesamt als getrennte Pixel zu fungieren, so daß sich dann zum einen durch die Primärfarbzuordnung und zum zweiten durch die Pixelmehrzahl eine komplexe Gruppenstruktur innerhalb der Lampe ergeben kann. Zudem kann es, wie in der in Bezug genommenen parallelen Anmeldung näher ausgeführt, durch den notwendigen Dimmbetrieb der einzelnen Gruppen zur Erzeugung kontinuierlicher Mischfarben sinnvoll sein, innerhalb jeder einzelnen Gruppe Elektrodenuntergruppen mit verschiedenen Entladungsabständen vorzusehen, um mit besonders kleinen Leistungen arbeiten zu können.The two or more pixels in this case within the same lamp must of course be operable independently of each other to total as separate pixels act, so that then on the one hand by the primary color assignment and second, due to the multiple pixels, a complex group structure within the lamp can result. It can also, as in the referenced parallel application explained in more detail by the necessary dimming operation of the individual groups be useful for creating continuous mixed colors, within each one To provide a group of electrode sub-groups with different discharge distances, in order to be able to work with particularly small services.

Insgesamt ist es damit also möglich, mit einzelnen Gasentladungslampen durch einen zeitlich veränderlichen Vielfarbbetrieb (einer Lampe oder eines Satzes benachbarter Lampen) eine farbige Anzeige aufzubauen. Bei einer weiteren Variante der Erfindung kann die Mehrfarberzeugung innerhalb eines einzelnen Pixels auch gemäß einem Prinzip erfolgen, das bereits in einer früheren Patentanmeldung DE 19927791A im Hinblick auf die Hinterleuchtung eines LCD-Displays dargestellt wurde. Demgemäß kann die Gasentladungslampe zeitlich sequentiell mit aufeinanderfolgenden Farben betrieben werden, wobei die Frequenz der Farberzeugung so hoch ist, daß das menschliche Auge tatsächlich eine entsprechende Mischfarbe wahrnimmt. Dazu können wiederum, wie in der in Bezug genommenen Anmeldung näher erläutert, innerhalb einer Gasentladungslampe mehrere Elektrodengruppen vorgesehen sein, die sequentiell betrieben werden, oder eine Mehrzahl jeweils den einzelnen Farben zugeordnete und insgesamt sequentiell zu betreibende Entladungslampen vorgesehen sein.Overall, it is therefore possible to use single gas discharge lamps time-varying multi-color operation (one lamp or a set of neighboring ones Lamps) to build a colored display. In a further variant of the invention multicolor generation within a single pixel can also be carried out according to a Principle are done in a previous patent application DE 19927791A shown with regard to the backlighting of an LCD display has been. Accordingly, the gas discharge lamp can be sequential in time with successive ones Colors are operated, the frequency of color generation is so high that the human eye actually has an appropriate mixed color perceives. You can do this again, as in the referenced application explained in more detail, a plurality of electrode groups within a gas discharge lamp be provided, which are operated sequentially, or a plurality each discharge lamps assigned to individual colors and to be operated sequentially overall be provided.

Bei der vorstehenden Anwendung im Rahmen einer großen Bildanzeigeeinrichtung mit einer Vielzahl solcher Entladungslampen könnte dabei auf das in der zitierten Anmeldung beschriebene vorgeschaltete LCD-Display verzichtet werden, weil durch den sequentiellen Betrieb im Grunde nur die Farbigkeit eines Bildpixels erzeugt werden soll. Dies kann allein durch die Steuerung der Leistung der einzelnen Primärfarben geschehen, ohne daß durch ein LCD-Display oder ein anderes Helligkeitsfilter zusätzlich eingegriffen werden müßte. Natürlich ist es aber auch möglich, mit einem solchen Display zu arbeiten, wodurch die Ortsauflösung stark erhöht werden kann, der Kostenaufwand jedoch beträchtlich steigt. Dabei bestünde die erfindungsgemäße Bildanzeigeeinrichtung also aus einer Parallelschaltung einzelner LCD-Anzeigen gemäß der in Bezug genommenen DE 1992779A.In the above application in a large image display device with a large number of such discharge lamps could refer to the one cited in the Application described upstream LCD display can be dispensed with because of the sequential operation basically only produces the color of an image pixel should. This can be done simply by controlling the performance of the individual primary colors happen without going through an LCD display or other brightness filter additional intervention would have to be made. Of course it is also possible with one to work with such a display, which can greatly increase the spatial resolution, however, the cost increases considerably. The invention would exist Image display device from a parallel connection of individual LCD displays according to the referenced DE 1992779A.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen näher erläutert, die in den Figuren dargestellt sind. In der vorstehenden wie in der nachfolgenden Beschreibung sind die offenbarten Merkmale sowohl im Hinblick auf die Vorrichtungskategorie als auch im Hinblick auf die Verfahrenskategorie zu verstehen.

  • Fig. 1 zeigt schematisch den Aufbau einer Lichtabstrahlungsfläche einer stillen Gasentladungslampe mit zwei, jeweils Primärfarben entsprechenden Leuchtstoffteilflächen;
  • Fig. 2 illustriert schematisch eine geeignete Elektrodenstruktur dazu;
  • Fig. 3 illustriert den Aufbau einer Variante zu Fig. 1, nämlich die Verschachtelung von drei, jeweils Primärfarben entsprechenden Leuchtstoffteilflächen;
  • Fig. 4 illustriert schematisch eine aus stillen Gasentladungslampen gemäß den Fig. 1 - 3 aufzubauende erfindungsgemäße Bildanzeigeeinrichtung.
  • The invention is explained in more detail below on the basis of exemplary embodiments which are illustrated in the figures. In the description above and in the description below, the features disclosed are to be understood both with regard to the device category and with regard to the method category.
  • Fig. 1 shows schematically the structure of a light emission surface of a silent gas discharge lamp with two phosphor surfaces, each corresponding to primary colors;
  • 2 schematically illustrates a suitable electrode structure for this;
  • FIG. 3 illustrates the structure of a variant of FIG. 1, namely the nesting of three phosphor partial areas, each corresponding to primary colors;
  • FIG. 4 schematically illustrates an image display device according to the invention to be constructed from silent gas discharge lamps according to FIGS. 1-3.
  • Fig. 1 zeigt schematisch den Flächenaufbau einer Lichtabstrahlungsfläche 1 einer stillen Gasentladungslampe. Die Lichtabstrahlungsfläche 1 entspricht dabei im wesentlichen der lichtdurchlässigen Deckenplatte eines mit Ausnahme der im folgenden erläuterten Einzelheiten konventionellen stillen Flachstrahlers. Man erkennt, daß die Lichtabstrahlungsfläche 1 in Schachbrettmusterform aufgeteilt ist in zwei Leuchtstoffteilflächen 2 und 3. Die Leuchtstoffteilflächen 2 und 3 verstehen sich dabei als Summe der jeweiligen hellen und dunklen Quadrate, jede Leuchtstoffteilfläche 2 und 3 bildet also die Hälfte der Lichtabstrahlungfläche und ist bei alleiniger Anregung bereits in der Lage, die Lichtabstrahlungsfläche 1 im wesentlichen vollständig auszuleuchten. Durch die relativ feine schachbrettmusterartige Verschachtelung zwischen den Leuchtstoffteilflächen 2 und 3 ist dabei in einem gewissen Beobachtungsabstand mit dem Auge nicht mehr aufzulösen, welche der Leuchtstoffteilflächen 2 oder 3 zur Lichtemission angeregt wird. Das gilt natürlich nicht für die unterschiedlichen Farben, die durch die Leuchtstoffe bzw. Leuchtstoffmischungen der Leuchtstoffteilflächen 2 und 3 gegeben sind. Bei diesem Beispiel soll die Leuchtstoffteilfläche 2 einen blauen Farbton und die Leuchtstoffteilfläche einen gelben Farbton abstrahlen. Damit sind also neben den Farbtönen Gelb und Blau auch Farbtöne in einem kontinuierlichen Grünspektrum darzustellen, das sich durch Mischung der beiden Primärfarben ergibt.1 schematically shows the surface structure of a light emission surface 1 silent gas discharge lamp. The light emission surface 1 essentially corresponds the translucent ceiling tile except for the one below explained details of conventional silent flat radiator. It can be seen that the Light emission surface 1 in checkerboard pattern is divided into two partial fluorescent areas 2 and 3. The partial phosphor surfaces 2 and 3 are understood as Sum of the respective light and dark squares, each phosphor partial area 2 and 3 therefore forms half of the light radiation area and is only excited already capable of illuminating the light emission surface 1 essentially completely. Due to the relatively fine checkerboard-like nesting between the phosphor sub-areas 2 and 3 are at a certain observation distance can no longer be resolved with the eye, which of the partial fluorescent areas 2 or 3 Light emission is stimulated. Of course, this does not apply to the different colors, by the phosphors or phosphor mixtures of the partial phosphor surfaces 2 and 3 are given. In this example, the partial phosphor surface 2 should be one blue shade and the fluorescent surface emit a yellow shade. In order to So in addition to the shades of yellow and blue, shades are also in a continuous To represent the green spectrum, which is a mixture of the two primary colors results.

    Die Homogenität kann weiter verstärkt werden, indem zusätzlich ein zur Homogenisierung der Leuchtdichteverteilung bei Bildschirmhinterleuchtungen an sich bekanntes Diffusorelement vor die Entladungslampe geschaltet wird, beispielsweise eine Prismenfolie oder eine Mattscheibe.The homogeneity can be further strengthened by adding a homogenization the luminance distribution in screen backlighting known per se Diffuser element is connected in front of the discharge lamp, for example a Prism foil or a ground glass.

    Fig. 2 zeigt ein Beispiel für eine zu Fig. 1 passende Elektrodenstruktur. Die beiden mittleren horizontalen Striche 4 entsprechen dabei zwei Anoden, die gewissermaßen um diese Anoden 4 rechteckig mäandrierenden Elektrodenstreifen 5 und 6 sind voneinander getrennt betreibbare Kathoden mit jeweiligen Vorsprüngen 7 zur Lokalisierung von Einzelentladungsstrukturen 8. Die Kathode 5 ist gestrichelt aufgeführt, um sie von der Kathode 6 unterscheidbar zu machen, tatsächlich ist sie natürlich eine durchgehende Bahn.FIG. 2 shows an example of an electrode structure suitable for FIG. 1. The two middle horizontal lines 4 correspond to two anodes, so to speak around these anodes 4 rectangular meandering electrode strips 5 and 6 are apart separately operable cathodes with respective projections 7 for localization of single discharge structures 8. The cathode 5 is listed in dashed order to make it distinguishable from the cathode 6, in fact it is of course one continuous path.

    Durch die getrennte Betreibbarkeit der Kathoden 5 und 6 ergeben sich zwei Elektrodengruppen 4, 5 und 4, 6 (mit gemeinsamen Anoden), denen die jeweils als Dreiecke schematisch eingezeichneten Entladungsstrukturen zugeordnet sind. In der Abbildung wird also von einem gleichzeitigen Betrieb beider Elektrodengruppen ausgegangen.The separate operability of the cathodes 5 and 6 results in two electrode groups 4, 5 and 4, 6 (with common anodes), each of which is a triangle schematically drawn discharge structures are assigned. In the picture it is assumed that both electrode groups are operated simultaneously.

    Es versteht sich von selbst, daß die Elektrodenstreifen 4, 5, 6 an den Kreuzungspunkten und in den Bereichen, in denen sie relativ eng benachbart laufen, gegeneinander isoliert sein müssen. Dazu kann insbesondere in den benachbarten Bereichen ein entsprechender Sicherheitsabstand zwischen den Kathodenstreifen 5 und 6 vorgesehen sein, der in Fig. 2 zeichnerisch nicht dargestellt ist. It goes without saying that the electrode strips 4, 5, 6 at the crossing points and in areas where they run relatively close to each other must be isolated. A corresponding one can do this in particular in the neighboring areas Safety distance between the cathode strips 5 and 6 is provided be, which is not shown in the drawing in Fig. 2.

    Es versteht sich von selbst, daß die zwischen den Kathoden 5 und 6 und den Anoden 4 jeweils eingeschlossenen Quadrate, in denen die einzelnen Entladungsstrukturen 8 liegen, in der Lampe direkt unter den Einzelquadraten der Leuchtstoffteilflächen 2 und 3 angeordnet sind. Dadurch sind die Elektrodengruppen 4, 5 und 4, 6 jeweils einer der beiden Leuchtstoffteilflächen 2 und 3 zugeordnet. Je nach Ausdehnung der einzelnen Quadrate und abhängig vom Abstand zwischen den Entladungsstrukturen 8 und den Leuchtstoffteilflächen (im Sinn der Figuren senkrecht auf der Zeichenebene) kommt es im Betrieb einer der beiden Elektrodengruppen 4, 5 und 4, 6 natürlich auch zu einer gewissen Anregung der ihr nicht eigentlich zugeordneten anderen Leuchtstoffteilfläche. Dies beeinträchtigt die Reinheit der Primärfarben bei Betrieb nur einer der beiden Elektrodengruppen 4, 5 und 4, 6 geringfügig, ändert jedoch an dem Grundprinzip der Darstellbarkeit aller Mischfarben zwischen den darstellbaren Primärfarben nichts im Grundsatz.It goes without saying that between the cathodes 5 and 6 and the anodes 4 squares each enclosed, in which the individual discharge structures 8 lie in the lamp directly below the individual squares of the partial phosphor surfaces 2 and 3 are arranged. As a result, the electrode groups 4, 5 and 4, 6 are each assigned to one of the two phosphor partial areas 2 and 3. Depending on the extent of individual squares and depending on the distance between the discharge structures 8 and the partial fluorescent areas (in the sense of the figures perpendicular to the drawing plane) naturally occurs when one of the two electrode groups 4, 5 and 4, 6 is in operation for a certain stimulation of the other partial phosphor surface that is not actually assigned to it. This affects the purity of the primary colors when only one is operating of the two electrode groups 4, 5 and 4, 6 slightly, but changes on that Basic principle of the representability of all mixed colors between the representable primary colors nothing in principle.

    Fig. 3 zeigt eine Variante zu dem Muster aus Fig. 1, die für drei Primärfarben ausgelegt ist. Die Leuchtstoffieilflächen sind mit 9, 10 und 11 bezeichnet und entsprechen bei dieser Variante den Primärfarben Blau bei 9, Grün bei 10 und Rot bei 11. Damit ist eine entsprechend aufgebaute Gasentladungslampe im Prinzip in der Lage, ein volles Farbspektrum anzuzeigen. Im übrigen gelten die Ausführungen zu Fig. 1. Die für die Variante in Fig. 3 notwendige Elektrodenstruktur ist naturgemäß etwas komplexer als die in Fig. 2 dargestellte und wird hier nicht im einzelnen erläutert, weil sich daraus nichts grundsätzlich Neues ergibt.FIG. 3 shows a variant of the pattern from FIG. 1, which is designed for three primary colors is. The fluorescent areas are designated 9, 10 and 11 and correspond In this variant, the primary colors blue at 9, green at 10 and red at 11 a correspondingly constructed gas discharge lamp is in principle able to display full color spectrum. Otherwise, the explanations for Fig. 1 apply the electrode structure required for the variant in FIG. 3 is naturally somewhat more complex than that shown in Fig. 2 and is not explained here in detail because nothing fundamentally new arises from this.

    Fig. 4 zeigt schematisch eine großformatige Bildanzeigeeinrichtung 12 mit einem Gestell 13, das eine großformatige rechteckige Flachbildschirmwand 14 aufgerichtet und über den Erdboden erhoben trägt. Eine solche Bildanzeigeeinrichtung 12 könnte beispielsweise in einem großen Sportstadion als Informationsfläche Verwendung finden oder auch als Werbetafel beispielsweise an Hauswänden montiert sein, dann natürlich ohne das hier gezeichnete Gestell 13.4 schematically shows a large-format image display device 12 with a Frame 13, which erects a large-format rectangular flat screen wall 14 and raised above the ground. Such an image display device 12 could for example in a large sports stadium as an information area find or be mounted as an advertising board, for example on house walls, then of course without the frame 13 shown here.

    Die Flachbildschirmwand 14 besteht im wesentlichen aus einer großen Zahl planar nebeneinander montierten einzelnen Gasentladungslampen 15, die entsprechend den Fig. 1 und 2 oder entsprechend Fig. 3 aufgebaut sind. Dadurch bilden sie Vollfarbpixel für eine Farbdarstellung mit zwei bzw. drei Primärfarben. Die grafische Bildinformation (also Hell-/Dunkelinformation) hat dabei eine der Größe der einzelnen Gasentladungslampen 15 entsprechende Ortsauflösung. Die Flachbildschirmwand 14 sollte also so ausgelegt sein, daß der Betrachter bei einem anzunehmenden Beobachtungsabstand insgesamt ein Bild erkennen kann und vorzugsweise eine einzelne Lampe nicht mehr für sich wahrnimmt.The flat screen wall 14 consists essentially of a large number planar side by side mounted individual gas discharge lamps 15, which correspond to the 1 and 2 or corresponding to Fig. 3 are constructed. As a result, they form full-color pixels for a color representation with two or three primary colors. The graphic image information (i.e. light / dark information) has one of the size of the individual Gas discharge lamps 15 corresponding spatial resolution. The flat screen wall 14 should be designed so that the viewer at an assumed observation distance can recognize an overall image and preferably a single image Lamp no longer perceives for itself.

    Alternativ kann die Bildanzeigeeinrichtung 12 aus Fig. 4 auch aus jeweils monochromen, jedoch verschiedenfarbigen Gasentladungslampen 15 aufgebaut sein. Bei der in Fig. 4 dargestellten schachbrettartigen Anordnung entspricht das einem Muster der Primärfarben wie in Fig. 1, wobei jedoch das einzelne Quadrat oder Rechteck nunmehr nicht einem sehr kleinen Leuchtstoffleck, sondern einer kompletten Gasentladungslampe entspricht. Es ist natürlich auch möglich, eine drei Primärfarben angepaßte Anordnung wie etwa in Fig. 3 zu verwenden, wobei dann die einzelnen Gasentladungslampen 15 auch eine andere als eine rechteckige Form aufweisen können (in Fig. 3 nämlich als Parallelogramme mit 60°- und 120°-Winkeln). Außerdem ist es natürlich möglich, die einzelnen Gasentladungslampen 15 in Fig. 4 auch zeitlich sequentiell zu betreiben, um mit der einzelnen Lampe 15 jeweils insgesamt (und zeitlichen Mittelwert) eine Vollfaibdarstellung zu erreichen. Dabei kann die grafische Bildinformation entweder durch die Steuerung der Leistung der einzelnen Lampen 15 oder durch zusätzliche Verwendung etwa eines LCD-Filters erzielt werden, was die Kosten jedoch beträchtlich erhöht.Alternatively, the image display device 12 from FIG. 4 can also consist of monochrome, however, differently colored gas discharge lamps 15 can be constructed. at the checkerboard arrangement shown in FIG. 4 corresponds to a pattern the primary colors as in Fig. 1, but with the single square or rectangle now not a very small fluorescent leak, but a complete gas discharge lamp equivalent. It is of course also possible to have a three primary colors matched Arrangement to be used as in FIG. 3, in which case the individual gas discharge lamps 15 can also have a shape other than rectangular (in 3 namely as parallelograms with 60 ° and 120 ° angles). Besides, it is of course possible, the individual gas discharge lamps 15 in Fig. 4 also sequentially in time to operate in order to total (and temporal Mean value) to achieve a full display. The graphic Image information either by controlling the power of the individual lamps 15 or by additional use such as an LCD filter, which the However, costs increased considerably.

    Im übrigen gilt die bereits in der Beschreibungseinleitung erwähnte Anmerkung, daß durch Unterteilung der einzelnen Lampen auch eine höhere örtliche Auflösung der grafischen Darstellung und der Farbdarstellung erreicht werden kann als der einzelnen Lampengröße entsprechend. Dies ist im wesentlichen eine ökonomische Frage, nämlich danach, ob ein Satz kleinerer Lampen oder eine dem Format des ganzen Satzes entsprechende, jedoch unterteilte, größere Lampe preisgünstiger herzustellen ist. Otherwise, the remark already mentioned in the introduction to the description applies that by dividing the individual lamps also a higher local resolution of the graphic representation and color representation can be achieved as the individual Lamp size accordingly. This is essentially an economic question namely according to whether a set of smaller lamps or the format of the entire set corresponding, but subdivided, larger lamp is cheaper to produce.

    Ein wesentlicher Vorteil der Verwendung von stillen Entladungslampen für Bildanzeigeeinrichtungen 12 wie in Fig. 4 besteht darin, daß sich mit den stillen Entladungslampen bei einem vertretbaren Stromverbrauch eine sehr hohe Leuchtdichte erzielen läßt. Außerdem sind stille Entladungslampen außerordentlich schaltfest, d.h. für zeitlich veränderliche Daueranwendungen gut geeignet. Sie zeigen zudem praktisch kein Anlaufverhalten bzw. keine Temperaturabhängigkeit der Leuchtleistung. Diese Vorteile sind für Anwendungen solcher Bildanzeigeeinrichtungen in Sportstadien, bei Konzertübertragungen, in der Werbung, bei Verkehrsleitsystemen und bei allen anderen Anwendungen, bei denen es auf die großformatige Bilddarstellung ankommt, besonders geeignet.A major advantage of using silent discharge lamps for image display devices 12 as in Fig. 4 is that with the silent discharge lamps with a reasonable power consumption a very high luminance can be achieved. In addition, silent discharge lamps are extremely switch-proof, i.e. well suited for time-varying permanent applications. They also show practical no start-up behavior or temperature dependence of the light output. These advantages are for applications of such image display devices in sports stadiums, in concert broadcasts, in advertising, in traffic management systems and in all other applications that require large-format image display, particularly suitable.

    Claims (8)

    1. Image display device (12) comprising a plurality of gas discharge lamps (15), respectively having a discharge vessel filled with a gas fill, at least two electrodes (4, 5, 6), a dielectric layer between at least one of the electrodes (4) and the gas fill, and a luminescent layer (2, 3, 9, 10, 11),
      the gas discharge lamps (15) being arranged next to one another in a plane to form a surface (14), and
      the image display (12) being coloured and each gas discharge lamp (15) respectively forming a full colour pixel,
      the electrodes (4, 5, 6) being subdivided into separately operable electrode groups (4, 5; 4, 6),
      the luminescent layer (2, 3, 9, 10, 11) being subdivided into differently coloured elementary luminescent surfaces,
      the differently coloured elementary luminescent surfaces (2, 3; 9, 10, 11) being assigned to the separately operable electrode groups (4, 5; 4, 6),
      characterized in that
      the elementary luminescent surfaces and electrode groups are interleaved in such a way that an illumination of essentially the entire light emission surface of the gas discharge lamp in question which is homogeneous to the eye at the observation distance can be obtained overall with each electrode group.
    2. Image display device (12) according to Claim 1, in which the gas discharge lamps (15) are respectively configured for sequentially timed operation with successive colours.
    3. Image display device (12) according to Claim 1, in which the gas discharge lamps (15) are respectively configured for simultaneous operation of the individual colours.
    4. Image display device (12) according to one of the preceding claims, in which each gas discharge lamp (15) forms a multiple full colour pixel.
    5. Image display device (12) according to one of the preceding claims, in which the light/dark image information of Image display is formed by the respective powers of the colour emissions of the gas discharge lamps (15) themselves.
    6. Image display device (12) according to one of Claims 1 - 4, in which a brightness filter (15) is placed in front of the gas discharge lamps.
    7. Image display device (12) according to claim 6, in which the brightness filter has LCD elements.
    8. Image display device (12) according to one of the preceding claims, at least Claim 2 and Claim 7, which consists of a planar arrangement of a plurality of display devices (15), which respectively have an LCD display and a gas discharge lamp (15) that successively emits colour in a timed sequence.
    EP01271620A 2000-12-20 2001-11-15 Image display device consisting of a plurality of silent gas discharge lamps Expired - Lifetime EP1344208B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE10063931 2000-12-20
    DE10063931A DE10063931A1 (en) 2000-12-20 2000-12-20 Image display device from a large number of silent gas discharge lamps
    PCT/DE2001/004282 WO2002050807A2 (en) 2000-12-20 2001-11-15 Image display device consisting of a plurality of silent gas discharge lamps

    Publications (2)

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    EP1344208A2 EP1344208A2 (en) 2003-09-17
    EP1344208B1 true EP1344208B1 (en) 2004-09-15

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    EP (1) EP1344208B1 (en)
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    KR (1) KR100838855B1 (en)
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    US20060164830A1 (en) * 2003-07-15 2006-07-27 Thomas Justel Colour tunable lighting element
    DE102006026348A1 (en) * 2006-06-02 2007-12-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Discharge lamp for unipolar dielectrically impeded discharges

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    JPH064902A (en) * 1992-06-19 1994-01-14 Canon Inc Polycarbonate resin composition and substrate for optical recording medium using the same and its production
    US5461397A (en) 1992-10-08 1995-10-24 Panocorp Display Systems Display device with a light shutter front end unit and gas discharge back end unit
    JP3075041B2 (en) * 1992-12-28 2000-08-07 三菱電機株式会社 Gas discharge display
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    JPH0926705A (en) * 1995-07-10 1997-01-28 Toshiba Corp Image forming device and method therefor
    DE19636965B4 (en) * 1996-09-11 2004-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electrical radiation source and radiation system with this radiation source
    EP0926705A1 (en) * 1997-12-23 1999-06-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Flat radiator with locally modulated surface illumination density
    DE19817477A1 (en) * 1998-04-20 1999-10-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Fluorescent lamp
    DE19844720A1 (en) * 1998-09-29 2000-04-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dimmable discharge lamp for dielectric barrier discharges
    DE19845228A1 (en) * 1998-10-01 2000-04-27 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dimmable discharge lamp for dielectric barrier discharges
    DE19927791A1 (en) 1999-06-18 2000-12-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Color display e.g. LCD has spatially controllable brightness filter and back lighting discharge lamp having dielectrically impeded electrode

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    US20040061420A1 (en) 2004-04-01
    EP1344208A2 (en) 2003-09-17
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    KR20030064860A (en) 2003-08-02
    DE50103682D1 (en) 2004-10-21
    CA2431992A1 (en) 2002-06-27
    JP2004515901A (en) 2004-05-27
    WO2002050807A2 (en) 2002-06-27
    US6972519B2 (en) 2005-12-06
    DE10063931A1 (en) 2002-07-04
    CN1554080A (en) 2004-12-08
    ATE276567T1 (en) 2004-10-15

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