EP0976145B1 - Display panel with flat lamp with locally modulated luminance - Google Patents
Display panel with flat lamp with locally modulated luminance Download PDFInfo
- Publication number
- EP0976145B1 EP0976145B1 EP98966303A EP98966303A EP0976145B1 EP 0976145 B1 EP0976145 B1 EP 0976145B1 EP 98966303 A EP98966303 A EP 98966303A EP 98966303 A EP98966303 A EP 98966303A EP 0976145 B1 EP0976145 B1 EP 0976145B1
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- European Patent Office
- Prior art keywords
- display device
- flat
- electrodes
- groups
- display
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/92—Lamps with more than one main discharge path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/305—Flat vessels or containers
Definitions
- the invention relates to display devices with lamps.
- lamps There are different types of lamps, based on the functional principle, Differentiate between size, design, performance range, etc.
- Lamp types for certain applications lie in the flatness of the Light generation and the uniformity of the flat light generation. at some use cases are about giving some examples, to illuminate an area of a certain extent, a certain one Distribute light output over a certain area to reduce glare a lighting solution for the sake of reducing shadow formation to find with light distribution distributed as flat as possible for decorative or design reasons, a lamp is particularly large perform and the like.
- Incandescent lamps for the aspect of flat backlighting and Lighting, combinations of one or more geometrically large ones Fluorescent lamps with (multiple) reflector systems for office lighting as an example of the aspect of non-glare and low shadow formation, or light tables for working with photo negatives for the point of view Glare-free and columnar luminaires with upright fluorescent lamps or from a multitude of lightbulbs, backlit, diffusing Panes of glass for interior design and decoration.
- Incandescent lamps were also used for. B. with reflector systems or systems from a variety of incandescent lamps.
- a relatively young type of lamp are the fluorescent lamps with a dielectric disabled discharge due to their special functioning are often designed as flat radiators. This is a discharge volume formed from not necessarily planes in the sense of straight, however flat and largely flat plates, such as glass, with the electrode structures are made on one or both glass plates.
- WO 91/09414 discloses a flat discharge lamp Display means.
- the shape of the electrode becomes the visual display of numbers, letters, symbols, etc.
- EP 0 414 498 shows a comparable prior art, with some Electrode groups are switchable.
- This invention is based on the prior art illustrated Technology addresses the problem of an improved ad setup create.
- a display device with a flat radiator with dielectric barrier discharge with a flat inhomogeneous electrode geometry for local modulation of the surface luminance characterized in that the display device a has backlit surface shape and the electrode geometry the surface shape to be backlit is coordinated.
- the invention uses the special structure of the flat radiators for dielectrically impeded discharges by changing the geometric Distribution of the discharge electrodes on the flat walls of the discharge volume, so z. B. on two substantially flat and the discharge volume together with a glass plate enclosing a frame, deliberately not distributed homogeneously.
- This orientation of the invention which deviates from the prior art, is based on the knowledge that there are many applications in which a local modulation of the surface luminance tailored to the application through a corresponding inhomogeneous distribution of the electrodes can be advantageous in the area of the flat radiator. Such advantages can in the area of better readability of an advertisement or a Lettering or signal, in the area of energy saving through better Alignment of the surface luminance with the local lighting requirements and the like. Some examples are in this application listed, and one is shown more specifically as an embodiment.
- Electrodes in two or more distributed inhomogeneously Groups operated, which can be switched or operated independently of one another are.
- the electrodes of each group are on their own Group-specific cathode or anode connection connected. This is only possible through the use of dielectric barrier discharges possible because of their so-called positive current-voltage characteristics - The problem-free parallel connection of several partial discharges or enable electrode tracks to form electrode groups.
- the separately operable groups each have specific areas of the Let the flat radiator correspond, especially surface areas higher Luminance, which are then switched on and off separately can. You can also use the separately operated groups Use the power rating of the lamp or to create different ones Surface pattern to achieve special optical effects.
- the invention relates to optical displays. It can be Analog instruments act as shown in the exemplary embodiment Digital displays to individual fields, determined by their glow symbolized statements for the valid display fields, as for conventional control lamps etc. In any case, there is a specific one to be illuminated Predefined surface shape of the display device, according to the invention the electrode geometry is matched. So that is in the area of the surface shapes to be illuminated a higher, the highest or at all generates a surface luminance. This allows the entire generated The amount of light and therefore the energy consumption is application-specific can be optimized without this for the flat radiator as a whole, i.e. its housing geometry or the discharge volume application-specific forms or complicated shapes become necessary.
- a special case for the area of display devices in geometric terms are the analog displays in which, as illustrated in the exemplary embodiment, especially the following forms for backlighting by a Adapted electrode geometry occur: circles, circle segments, circular rings and circular ring segments.
- Such forms are with the conventional technique practically only defined by the use of screens or masks backlight, so that the invention here in terms of simplicity of technical structure and energy consumption offer significant advantages can. This applies in particular to circular rings or circular ring segments and others tall or curved shapes.
- the invention will now be illustrated on the basis of a concrete exemplary embodiment, which is shown schematically in the figure.
- the figure shows a plan view of a flat radiator for a motor vehicle "dashboard" Backlighting of a combination instrument for displaying the speed, the engine speed, the cooling water temperature and the tank content.
- the outer edge of a discharge volume denoted by 1 is initially shown, that of two glass plates lying flat in the plane of the drawing and a seal running along the drawn edge is included.
- the glass plates protrude in the lower area of the figure an approach denoted by 3 beyond the discharge volume 1.
- At the right edge is the pump nozzle used for evacuation and filling (in the closed state).
- Summarized with 2 are the electrodes printed on one of the plates, being cathodes and anodes run alternately, but not in the figure are more differentiated.
- the electrodes lie with most of their length 2 in the discharge volume 1 and are outside of the discharge volume 1 part located in the area of approach 3 to the supply circuit and car electrics connected.
- the electrodes 2 are in three spatially separate groups 2a, 2b and 2c before, each corresponding to certain display units or content.
- the left group 2a corresponds to an analog instrument for speed display and leads from their leading to Approach 3 straight section apart, the circular ring segment of this analog instrument to.
- group 2c two instruments are combined, namely a tank level indicator and a cooling water thermometer.
- the geometry can also be advantageous the flat radiator, which, as is clear in this exemplary embodiment, in shape and size particularly well at the place of use or installation can be adjusted.
- the present invention nevertheless allows this the use of simple flat radiator housing shapes, in the present Example the outer shape of the discharge volume 1 including the approach 3 instead of the complicated circular ring segments with connectors. Also, the flatness in the limited space in a dashboard, Cockpit etc. an advantage. The same applies to the low weight.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Instrument Panels (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Auf die folgende Parallelanmeldung der selben Anmelderin mit dem Anmeldetag 23.12.1997 wird Bezug genommen: europäische Patentanmeldung Nr. 97122800.2 mit dem Titel "Signallampe und Leuchtstoffe dazu".The following parallel application by the same applicant with the filing date 23.12.1997 Reference is made to: European patent application No. 97122800.2 with the title "Signal lamp and fluorescent materials".
Die Erfindung bezieht sich auf Anzeigeneinrichtungen mit Lampen. Es gibt verschiedene Typen von Lampen, die sich nach den Kriterien Funktionsprinzip, Baugröße, Bauform, Leistungsbereich usw. unterscheiden lassen.The invention relates to display devices with lamps. There are different types of lamps, based on the functional principle, Differentiate between size, design, performance range, etc.
Einer unter vielen Gesichtspunkten bei der Entwicklung und Auswahl von Lampentypen für bestimmte Anwendungsfälle liegt in der Flächigkeit der Lichterzeugung und der Gleichmäßigkeit der flächigen Lichterzeugung. Bei manchen Anwendungsfällen geht es darum, um einige Beispiele zu nennen, eine Fläche bestimmter Ausdehnung zu hinterleuchten, eine bestimmte Lichtleistung auf eine bestimmte Fläche zu verteilen, um die Blendwirkung zu verringern, aus Gründen der Verringerung der Schattenbildung eine Beleuchtungslösung mit möglichst flächig verteilter Lichtabgabe zu finden, aus dekorativen oder gestalterischen Gründen eine Lampe besonders großflächig auszuführen und dergleichen mehr. Konkrete Ausgestaltungen sind etwa mit mäandrierenden Gasentladungslampen hinterleuchtete Werbetafeln oder Signallampen oder Spiegelreflektoren mit brennpunktnah angeordneten Glühlampen für den erwähnten Aspekt der flächigen Hinterleuchtung und Beleuchtung, Kombinationen aus ein oder mehreren geometrisch großen Leuchtstofflampen mit (Mehrfach)- Reflektorsystemen für die Bürobeleuchtung als Beispiel für den Aspekt Blendfreiheit und geringe Schattenbildung, oder Leuchttische für die Arbeit mit Fotonegativen für den Gesichtspunkt Blendfreiheit sowie säulenförmige Leuchten mit aufrecht stehenden Leuchtstofflampen oder von einer Vielzahl von Glühlampen hinterleuchteten, mattstreuenden Glasscheiben für den Innenarchitektur- und Dekorationsbereich.One from many points of view when developing and selecting Lamp types for certain applications lie in the flatness of the Light generation and the uniformity of the flat light generation. at some use cases are about giving some examples, to illuminate an area of a certain extent, a certain one Distribute light output over a certain area to reduce glare a lighting solution for the sake of reducing shadow formation to find with light distribution distributed as flat as possible for decorative or design reasons, a lamp is particularly large perform and the like. Specific configurations are about billboards backlit with meandering gas discharge lamps or Signal lamps or mirror reflectors with focal points arranged Incandescent lamps for the aspect of flat backlighting and Lighting, combinations of one or more geometrically large ones Fluorescent lamps with (multiple) reflector systems for office lighting as an example of the aspect of non-glare and low shadow formation, or light tables for working with photo negatives for the point of view Glare-free and columnar luminaires with upright fluorescent lamps or from a multitude of lightbulbs, backlit, diffusing Panes of glass for interior design and decoration.
In vielen solchen Fällen sind Leuchstofflampen bzw. Gasentladungslampen verwendet worden. Auch wurden Glühlampen z. B. mit Reflektorsystemen oder Systeme aus einer Vielzahl von Glühlampen eingesetzt.In many such cases there are fluorescent lamps or gas discharge lamps been used. Incandescent lamps were also used for. B. with reflector systems or systems from a variety of incandescent lamps.
Ein relativ junger Lampentyp sind die Leuchtstofflampen mit einer dielektrisch behinderten Entladung, die aufgrund ihrer besonderen Funktionsweise häufig als Flachstrahler ausgeführt sind. Dabei wird ein Entladungsvolumen gebildet aus nicht unbedingt ebenen im Sinne von geraden, jedoch flächigen und weitgehend ebenen Platten, etwa aus Glas, wobei die Elektrodenstrukturen auf einer oder beiden Glasplatten hergestellt sind. Durch die Elektrodenverteilung auf eine große Fläche und eventuell durch Einsatz zusätzlicher Diffusorschichten lassen sich großflächige flache Lampen mit sehr gleichmäßiger Lichtverteilung realisieren.A relatively young type of lamp are the fluorescent lamps with a dielectric disabled discharge due to their special functioning are often designed as flat radiators. This is a discharge volume formed from not necessarily planes in the sense of straight, however flat and largely flat plates, such as glass, with the electrode structures are made on one or both glass plates. Through the Electrode distribution over a large area and possibly by using additional ones Diffuser layers can be used with large flat lamps Realize even light distribution.
Die WO 91/09414 offenbart eine durch eine flache Entladungslampe gebildete Anzeigeeinrichtung. Dabei wird durch die Elektrodenform die Sichtanzeige von Zahlen, Buchstaben, Symbol, u.sw bewirkt. WO 91/09414 discloses a flat discharge lamp Display means. The shape of the electrode becomes the visual display of numbers, letters, symbols, etc.
Die EP 0 414 498 zeigt einen vergleichbaren Stand der Technik, wobei einzelne Elektrodengruppen schaltbar sind.EP 0 414 498 shows a comparable prior art, with some Electrode groups are switchable.
Dieser Erfindung liegt auf der Grundlage des dargestellten Standes der Technik das Problem zugrunde, eine verbesserte Anzeigeneinrichtung zu schaffen.This invention is based on the prior art illustrated Technology addresses the problem of an improved ad setup create.
Dieses Problem wird nach Anspruch 1 gelöst durch eine Anzeigeeinrichtung mit einem Flachstrahler mit dielektrisch behinderter Entladung mit einer flächig inhomogenen Elektrodengeometrie zur örtlichen Modulation der Flächenleuchtdichte, dadurch gekennzeichnet, dass die Anzeigeeinrichtung eine zu hinterleuchtende Flächenform aufweist und die Elektrodengeometrie auf die zu hinterleuchtende Flächenform abgestimmt ist.This problem is solved according to claim 1 by a display device with a flat radiator with dielectric barrier discharge with a flat inhomogeneous electrode geometry for local modulation of the surface luminance, characterized in that the display device a has backlit surface shape and the electrode geometry the surface shape to be backlit is coordinated.
Mit dieser Lösung nutzt die Erfindung die besondere Struktur der Flachstrahler für dielektrisch behinderte Entladungen, indem sie die geometrische Verteilung der Entladungselektroden auf den flachen Wänden des Entladungsvolumens, also z. B. auf zwei im wesentlichen ebenen und das Entladungsvolumen zusammen mit einem Rahmen einschließenden Glasplatten, bewußt nicht homogen verteilt.With this solution, the invention uses the special structure of the flat radiators for dielectrically impeded discharges by changing the geometric Distribution of the discharge electrodes on the flat walls of the discharge volume, so z. B. on two substantially flat and the discharge volume together with a glass plate enclosing a frame, deliberately not distributed homogeneously.
Dieser vom Stand der Technik abweichenden Ausrichtung der Erfindung, liegt die Erkenntnis zugrunde, daß es viele Anwendungsfälle gibt, bei denen eine auf den Anwendungsfall abgestimmte örtliche Modulation der Flächenleuchtdichte durch eine entsprechende inhomogene Verteilung der Elektroden in der Fläche des Flachstrahlers von Vorteil sein kann. Solche Vorteile können im Bereich der besseren Ablesbarkeit einer Anzeige oder eines Schriftzugs oder Signals, im Bereich der Energieeinsparung durch bessere Ausrichtung der Flächenleuchtdichte auf die örtlichen Beleuchtungsanforderungen und dergleichen mehr liegen. Einige Beispiele sind in dieser Anmeldung aufgeführt, und eines ist als Ausführungsbeispiel konkreter dargestellt.This orientation of the invention which deviates from the prior art, is based on the knowledge that there are many applications in which a local modulation of the surface luminance tailored to the application through a corresponding inhomogeneous distribution of the electrodes can be advantageous in the area of the flat radiator. Such advantages can in the area of better readability of an advertisement or a Lettering or signal, in the area of energy saving through better Alignment of the surface luminance with the local lighting requirements and the like. Some examples are in this application listed, and one is shown more specifically as an embodiment.
Im Zusammenhang mit der Erfindung kann eine weitere Maßnahme sehr vorteilhaft sein, die zu einer bevorzugten Ausgestaltung einer erfindungsgemäßen Anzeigeeinrichtung führt. Bei dieser Variante werden die erfindungsgemäß flächig inhomogen verteilten Elektroden in zwei oder mehreren Gruppen betrieben, die unabhängig voneinander schaltbar bzw. betreibbar sind. Dazu sind die Elektroden einer jeweiligen Gruppe an einem eigenen gruppenspezifischen Kathoden- oder Anodenanschluß angeschlossen. Dies ist überhaupt erst durch die Verwendung von dielektrisch behinderten Entladungen möglich, die - aufgrund ihrer sogenannten positiven Strom-Spannungscharakteristik - das problemlose Parallelschalten mehrerer Teilentladungen bzw. Elektrodenbahnen zu Elektrodengruppen ermöglichen.Another measure can be very useful in connection with the invention be advantageous to a preferred embodiment of an inventive Indicator leads. In this variant, the invention Electrodes in two or more distributed inhomogeneously Groups operated, which can be switched or operated independently of one another are. For this purpose, the electrodes of each group are on their own Group-specific cathode or anode connection connected. This is only possible through the use of dielectric barrier discharges possible because of their so-called positive current-voltage characteristics - The problem-free parallel connection of several partial discharges or enable electrode tracks to form electrode groups.
Gerade in Zusammenhang mit der örtlich inhomogenen Aufteilung der Elektroden auf die Flachstrahlerfläche kann es dabei besonders sinnvoll sein, die getrennt betreibbaren Gruppen jeweils bestimmten Flächenbereichen des Flachstrahlers entsprechen zu lassen, insbesondere Flächenbereichen erhöhter Leuchtdichte, die dann separat voneinander ein- und ausgeschaltet werden können. Man kann die getrennt betreibbaren Gruppen aber auch zur Leistungsabstufung der Lampe verwenden oder zur Erzeugung verschiedener Flächenmuster, um besondere optische Effekte zu erzielen.Especially in connection with the locally inhomogeneous distribution of the electrodes on the flat radiator surface it can be particularly useful the separately operable groups each have specific areas of the Let the flat radiator correspond, especially surface areas higher Luminance, which are then switched on and off separately can. You can also use the separately operated groups Use the power rating of the lamp or to create different ones Surface pattern to achieve special optical effects.
Die Erfindung bezieht sich auf optische Anzeigen. Dabei kann es sich um Analoginstrumente handeln, wie im Ausführungsbeispiel dargestellt, um Digitalanzeigen, um Felder mit einzelnen, durch ihr Leuchten bestimmte symbolisierte Aussagen zur Geltung bringenden Anzeigefeldern, wie bei konventionellen Kontrollampen usw. In jedem Fall ist eine bestimmte zu beleuchtende Flächenform der Anzeigeeinrichtung vorgegeben, auf die erfindungsgemäß die Elektrodengeometrie abgestimmt ist. Damit wird im Bereich der zu beleuchtenden Flächenformen eine höhere, die höchste oder überhaupt eine Flächenleuchtdichte erzeugt. Damit können die gesamte erzeugte Lichtmenge und damit der Energieverbrauch anwendungsspezifisch optimiert werden, ohne daß für den Flachstrahler insgesamt, also seine Gehäusegeometrie bzw. das Entladungsvolumen anwendungsspezifische Formen oder komplizierte Formen notwendig werden.The invention relates to optical displays. It can be Analog instruments act as shown in the exemplary embodiment Digital displays to individual fields, determined by their glow symbolized statements for the valid display fields, as for conventional control lamps etc. In any case, there is a specific one to be illuminated Predefined surface shape of the display device, according to the invention the electrode geometry is matched. So that is in the area of the surface shapes to be illuminated a higher, the highest or at all generates a surface luminance. This allows the entire generated The amount of light and therefore the energy consumption is application-specific can be optimized without this for the flat radiator as a whole, i.e. its housing geometry or the discharge volume application-specific forms or complicated shapes become necessary.
Mit der Abstimmung der Elektrodengeometrie und damit der Flächenleuchtdichte auf das spezifische Design der zu beleuchtenden oder hinterleuchtenden Anzeigeeinrichtung gewinnt man unabhängig von Energieeinsparungsaspekten auch einen weiteren Freiheitsgrad im Hinblick auf die Ergonomie, d. h. auf die deutlichere Strukturierung oder bessere Erkennbarkeit der Anzeigeeinrichtung und ihrer verschiedenen Darstellungen und Funktionen. Dieser Aspekt ist auch in Kombination mit der getrennten Schaltbarkeit verschiedener Gruppen zu sehen, und zwar in dem Sinn, daß aus Gründen der Energieeinsparung oder der Ergonomie unterschiedliche Bereiche der Anzeigeeinrichtung unterschiedlich hell betrieben und damit bestimmte Bereiche und Aussagen der Anzeige hervorgehoben werden können. Es können auch bestimmte, momentan nebensächliche Bereiche der Anzeigeeinrichtung durch Dunkelschaltung ausgeblendet werden usw.With the coordination of the electrode geometry and thus the surface luminance on the specific design of the lights to be illuminated or backlit Display device is obtained regardless of energy saving aspects also a further degree of freedom in terms of ergonomics, d. H. for clearer structuring or better recognizability the display device and its various representations and functions. This aspect is also in combination with the separate switchability to see different groups, in the sense that for reasons different areas of energy saving or ergonomics the display device operated differently bright and thus determined Areas and statements of the ad can be highlighted. It can also certain, currently immaterial areas of the display device hidden by darkening etc.
Das weiter unten näher erläuterte Ausführungsbeispiel dieser Erfindung bezieht sich auf eine Anzeigeeinrichtung in einem Kfz-"Armaturenbrett". Dieser Sonderfall steht für einen bevorzugten Anwendungsbereich der Erfindung, nämlich Anzeigeeinrichtungen in Straßen- oder Schienenfahrzeugen, Schiffen oder Flugzeugen bzw. motorisierten Verkehrsmitteln allgemein. Gerade in diesem Bereich sind die ergonomischen Anforderungen an Anzeigeeinrichtungen bzw. Armaturen besonders hoch.The embodiment of this invention explained in more detail below on a display device in a motor vehicle "dashboard". This Special case stands for a preferred field of application of the invention, namely display devices in road or rail vehicles, Ships or planes or motorized means of transport in general. Just The ergonomic requirements are in this area Display devices and fittings particularly high.
Ein Sonderfall für den Bereich Anzeigeeinrichtungen in geometrischer Hinsicht sind die Analoganzeigen bei denen, wie beim Ausführungsbeispiel veranschaulicht, vor allem folgende Formen zur Hinterleuchtung durch eine angepaßte Elektrodengeometrie auftreten: Kreise, Kreissegmente, Kreisringe und Kreisringsegmente. Solche Formen sind mit der konventionellen Technik praktisch nur durch Verwendung von Blenden oder Masken definiert zu hinterleuchten, so daß die Erfindung hier hinsichtlich der Einfachheit des technischen Aufbaus und des Energieverbrauchs wesentliche Vorteile bieten kann. Das gilt insbesondere für Kreisringe oder Kreisringsegmente und andere hohe oder um einen Innenbereich gekrümmte Formen.A special case for the area of display devices in geometric terms are the analog displays in which, as illustrated in the exemplary embodiment, especially the following forms for backlighting by a Adapted electrode geometry occur: circles, circle segments, circular rings and circular ring segments. Such forms are with the conventional technique practically only defined by the use of screens or masks backlight, so that the invention here in terms of simplicity of technical structure and energy consumption offer significant advantages can. This applies in particular to circular rings or circular ring segments and others tall or curved shapes.
Die Erfindung wird nun veranschaulicht anhand eines konkreten Ausführungsbeispiels, das in der Figur schematisch dargestellt ist. Die Figur zeigt eine Draufsicht auf einen Flachstrahler für ein Kfz-"Armaturenbrett" zur Hinterleuchtung eines Kombinationsinstruments für die Anzeige der Geschwindigkeit, der Motordrehzahl, der Kühlwassertemperatur und des Tankinhalts.The invention will now be illustrated on the basis of a concrete exemplary embodiment, which is shown schematically in the figure. The figure shows a plan view of a flat radiator for a motor vehicle "dashboard" Backlighting of a combination instrument for displaying the speed, the engine speed, the cooling water temperature and the tank content.
Dargestellt ist zunächst der Außenrand eines mit 1 bezeichneten Entladungsvolumens,
das von zwei flach in der Zeichenebene liegenden Glasplatten
und einer entlang dem eingezeichneten Rand verlaufenden Dichtung
eingeschlossen ist. Im unteren Bereich der Figur ragen die Glasplatten mit
einem mit 3 bezeichneten Ansatz über das Entladungsvolumen 1 hinaus. Am
rechten Rand ist der für die Evakuierung und Füllung verwendete Pumpstutzen
(in geschlossenem Zustand) eingezeichnet. Summarisch mit 2 bezeichnet
sind die auf eine der Platten aufgedruckten Elektroden, wobei Kathoden
und Anoden jeweils abwechselnd verlaufen, in der Figur jedoch nicht
näher differenziert sind. Mit dem größten Teil ihrer Länge liegen die Elektroden
2 in dem Entladungsvolumen 1 und sind an ihrem außerhalb des Entladungsvolumens
1 befindlichen Teil im Bereich des Ansatzes 3 an die Versorgungsschaltung
und Kfz-Elektrik angeschlossen.The outer edge of a discharge volume denoted by 1 is initially shown,
that of two glass plates lying flat in the plane of the drawing
and a seal running along the drawn edge
is included. The glass plates protrude in the lower area of the figure
an approach denoted by 3 beyond the discharge volume 1. At the
right edge is the pump nozzle used for evacuation and filling
(in the closed state). Summarized with 2
are the electrodes printed on one of the plates, being cathodes
and anodes run alternately, but not in the figure
are more differentiated. The electrodes lie with most of their
Die Elektroden 2 liegen in drei räumlich getrennten Gruppen 2a, 2b und 2c
vor, die jeweils bestimmten Anzeigeeinheiten bzw. -inhalten entsprechen.
Konkret entspricht die linke Gruppe 2a einem Analoginstrument zur Geschwindigkeitsanzeige
und führt, von ihrem zu dem Ansatz 3 führenden
geraden Abschnitt abgesehen, das Kreisringsegment dieses Analoginstruments
nach. Entsprechendes gilt für die einem Motordrehzahlmesser entsprechende
Gruppe 2b. Im Fall der Gruppe 2c sind zwei Instrumente zusammengeschlossen,
und zwar eine Tankinhaltsanzeige und ein Kühlwasserthermometer.The
Sinn dieser Auftrennung ist im vorliegenden Fall, das je nach Betriebszustand
des Kraftfahrzeugs nur die tatsächlich für den Fahrer notwendigen
Informationen in das Armaturenbrett eingeblendet werden können. Das ist
in jedem Fall die Geschwindigkeitsanzeige 2a. Bei Erreichen der Drehzahlgrenze
des Motors oder auf Wunsch des Fahrers wird die Anzeige 2b hinzugefügt.
Analog kann bei fast leerem Kraftstofftank oder bei noch niedriger
oder überhöhter Kühlwassertemperatur des Motors sowie natürlich auf
Wunsch des Fahrers die dritte Einheit 2c zur Hinterleuchtung der verbleibenden
beiden Instrumente zugeschaltet werden. In genau analoger Weise
werden auch einzelne Kontroll- und Warnfelder in der dargestellten Anzeigeeinrichtung
bei Bedarf eingeschaltet. Die entsprechenden Elektrodenstrukturen
bilden jeweils weitere Gruppen, sind jedoch der Übersichtlichkeit halber
in der Figur nicht mehr dargestellt. Zu denken ist an die üblichen Warnhinweise,
etwa an "Handbremse angezogen", "Fernlicht eingeschaltet" usw.
Die Elektroden 2 sind nach dem Siebdruckverfahren auf eine der beiden
Glasplatten aufgedruckt. Sie sind mit einer Glasbarriere als Dielektrikum
beschichtet. Der Abstand zwischen den beiden Glasplatten beträgt etwa 7
mm, wobei sie als Dichtung über einen den Außenrand des Entladungsvolumens
1 bildenden Glasrahmen mit Glaslot verbunden sind. Das so dicht
eingeschlossene Entladungsvolumen enthält als Entladungsfüllung eine Xe-Füllung
bei etwa 100 mbar (= 10 kPa).The purpose of this separation is in the present case, depending on the operating state
of the motor vehicle only those that are actually necessary for the driver
Information can be displayed in the dashboard. This is
in any case the
Weitere Einzelheiten zu der Technik von Xe-Excimer-Entladungslampen und zu der hier gewählten gepulsten Betriebsweise sind folgenden Anmeldungen zu entnehmen, deren Offenbarungsgehalt hier in Bezug genommen ist: WO 94/23 442 bzw. DE-P 43 11 197.1 und WO 97/04625 bzw. DE 195 26 211.5. Weiterhin wird verwiesen auf die Anmeldung DE 196 36 965.7, die besondere Elektrodenstrukturen zur Festlegung der zwischen den Kathoden und Anoden brennenden Einzelentladungen in ihrer geometrischen Struktur zeigt. Dazu werden auch bei diesem Ausführungsbeispiel an den Kathoden kleine Vorsprünge angebracht. Weiterhin wird verwiesen auf eine Anmeldung der gleichen Anmelderin mit dem Titel: "Signallampe und Leuchtstoffe dazu", Aktenzeichen EP 97122800.2, die bevorzugte Leuchtstoffe für Signallampen insbesondere für Xe-Excimer-Entladungen zeigt. Auch die Offenbarung dieser beiden Anmeldungen ist hier inbegriffen.More details on the technique of Xe excimer discharge lamps and The following applications are for the pulsed operating mode selected here can be seen, the disclosure content of which is referred to here: WHERE 94/23 442 or DE-P 43 11 197.1 and WO 97/04625 or DE 195 26 211.5. Reference is also made to the application DE 196 36 965.7, the special one Electrode structures for fixing the between the cathodes and Anodes burning individual discharges in their geometric structure shows. For this purpose, the cathodes are also used in this exemplary embodiment small protrusions attached. Furthermore, reference is made to registration the same applicant with the title: "Signal lamp and fluorescent to this ", file number EP 97122800.2, the preferred phosphors for signal lamps especially for Xe excimer discharges. Revelation too these two registrations are included here.
An dem vorstehenden Ausführungsbeispiel wird deutlich, daß sich die Erfindung
im Gegensatz zum konventionellen Einsatz gebogener Leuchtstofflampen
oder mehrerer Glühlampen durch einen technisch einfachen und
rationell herstellbaren Aufbau und eine genau an das Design der Anzeigeeinrichtung
angepaßte Verteilung der Flächenleuchtdichte auszeichnet. Damit
werden die Energieausnutzung und die Ergonomie verbessert. Darüber
hinaus sind Flachstrahler mit dielektrisch behinderter Entladung auch besonders
vorteilhaft, weil sie eine hohe Schaltfestigkeit und Vibrationsunempfindlichkeit
aufweisen und in ihrer Lebensdauer im Grunde nur durch
die Stabilität der verwendeten Leuchtstoffe ("Maintenance") begrenzt sind.
Diese Vorteile sind vor allem bei motorisierten Verkehrsmitteln wichtig, bei
denen der Aufwand zur Reparatur oder zum Austausch hoch ist und ein
Ausfall einer Anzeigeeinrichtung bzw. ihre Beleuchtung aus Sicherheitsgründen
besonders ungünstig ist. Von Vorteil sein kann auch die Geometrie
der Flachstrahler, die, wie in diesem Ausführungsbeispiel deutlich, in Form
und Größe besonders gut an den Ort der Verwendung bzw. des Einbaus
angepaßt werden können. Dabei erlaubt die vorliegende Erfindung dennoch
die Verwendung einfacher Flachstrahler-Gehäuseformen, im vorliegenden
Beispiel die Außenform des Entladungsvolumens 1 einschließlich des Ansatzes
3 anstelle der komplizierten Kreisringsegmente mit Anschlußstücken.
Auch ist die Flachheit bei den begrenzten Raumverhältnissen in einem Armaturenbrett,
Cockpit usw. von Vorteil. Gleiches gilt für das geringe Gewicht.From the above embodiment it is clear that the invention
in contrast to the conventional use of curved fluorescent lamps
or more light bulbs through a technically simple and
rationally producible structure and a design to match the display
adapted distribution of the surface luminance. In order to
energy efficiency and ergonomics are improved. About that
Flat radiators with dielectrically impeded discharge are also special
advantageous because they have a high switching stability and vibration resistance
have and in their lifespan basically only by
the stability of the phosphors used ("maintenance") is limited.
These advantages are especially important when using motorized transportation
for whom the effort for repair or replacement is high and a
Failure of a display device or its lighting for safety reasons
is particularly unfavorable. The geometry can also be advantageous
the flat radiator, which, as is clear in this exemplary embodiment, in shape
and size particularly well at the place of use or installation
can be adjusted. The present invention nevertheless allows this
the use of simple flat radiator housing shapes, in the present
Example the outer shape of the discharge volume 1 including the
Claims (5)
- Display device having a flat radiator with dielectrically impeded discharge with an areally inhomogeneous electrode geometry (2a, 2b, 2c) for local modulation of the surface luminance, characterized in that the display device has an area form to be backlit by the flat radiator, and the electrode geometry is coordinated with the area form to be backlit.
- Display device according to Claim 1, in which the electrodes (2) are divided into separately operable groups for the purpose of independently switchable operation.
- Display device according to Claim 2, in which the groups (2a, 2b, 2c) are divided areally and correspond to different luminous areas which are to be operated independently.
- The display device as claimed in one of the preceding claims, which is a circular, circle segment-shaped, annular or annulus segment-shaped analogue display.
- Display device according to one of the preceding claims as a display device in a vehicle, ship or aircraft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98966303A EP0976145B1 (en) | 1997-12-23 | 1998-12-11 | Display panel with flat lamp with locally modulated luminance |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97122799 | 1997-12-23 | ||
| EP97122799A EP0926705A1 (en) | 1997-12-23 | 1997-12-23 | Flat radiator with locally modulated surface illumination density |
| PCT/EP1998/008103 WO1999034409A1 (en) | 1997-12-23 | 1998-12-11 | Flat reflector lamp with locally modulated luminance |
| EP98966303A EP0976145B1 (en) | 1997-12-23 | 1998-12-11 | Display panel with flat lamp with locally modulated luminance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0976145A1 EP0976145A1 (en) | 2000-02-02 |
| EP0976145B1 true EP0976145B1 (en) | 2003-03-12 |
Family
ID=8227874
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97122799A Withdrawn EP0926705A1 (en) | 1997-12-12 | 1997-12-23 | Flat radiator with locally modulated surface illumination density |
| EP98966303A Expired - Lifetime EP0976145B1 (en) | 1997-12-23 | 1998-12-11 | Display panel with flat lamp with locally modulated luminance |
| EP98966304A Expired - Lifetime EP0995224B1 (en) | 1997-12-23 | 1998-12-11 | Gas discharge lamp with separately operating electrode groups |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97122799A Withdrawn EP0926705A1 (en) | 1997-12-12 | 1997-12-23 | Flat radiator with locally modulated surface illumination density |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98966304A Expired - Lifetime EP0995224B1 (en) | 1997-12-23 | 1998-12-11 | Gas discharge lamp with separately operating electrode groups |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US6388374B1 (en) |
| EP (3) | EP0926705A1 (en) |
| JP (2) | JP3530199B2 (en) |
| KR (2) | KR100355896B1 (en) |
| CN (1) | CN1248345A (en) |
| AT (1) | ATE234506T1 (en) |
| CA (2) | CA2281221A1 (en) |
| DE (3) | DE19817479A1 (en) |
| HU (1) | HUP0002078A3 (en) |
| TW (1) | TW432899B (en) |
| WO (2) | WO1999034411A1 (en) |
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| EP0926705A1 (en) | 1997-12-23 | 1999-06-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Flat radiator with locally modulated surface illumination density |
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| DE19845228A1 (en) * | 1998-10-01 | 2000-04-27 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dimmable discharge lamp for dielectric barrier discharges |
| DE19928438A1 (en) * | 1999-06-23 | 2000-12-28 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method for operating a discharge lamp |
| DE19960053A1 (en) | 1999-12-13 | 2001-06-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Flat lighting device |
| DE19960728B4 (en) | 1999-12-16 | 2011-03-31 | Osram Gesellschaft mit beschränkter Haftung | Device for shadow-free backlighting of large-area displays |
| DE10048409A1 (en) | 2000-09-29 | 2002-04-11 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Discharge lamp with capacitive field modulation |
| DE10063931A1 (en) * | 2000-12-20 | 2002-07-04 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Image display device from a large number of silent gas discharge lamps |
| DE10063930C1 (en) | 2000-12-20 | 2002-08-01 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Silent discharge lamp with controllable color and image display device with this silent discharge lamp and method for operating the same |
| JP3471782B2 (en) * | 2001-02-13 | 2003-12-02 | Ｎｅｃ液晶テクノロジー株式会社 | Flat fluorescent lamp unit and liquid crystal display device using the same |
| US6762556B2 (en) | 2001-02-27 | 2004-07-13 | Winsor Corporation | Open chamber photoluminescent lamp |
| DE10111191A1 (en) | 2001-03-08 | 2002-09-19 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electrical contact system e.g. for flat radiator of LCD system, has receptacle for insulating body with mounted contact part |
| DE10138924A1 (en) * | 2001-08-08 | 2003-02-20 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Manufacturing silent flat radiator for dielectrically barrier discharge lamp involves using only some supporting elements to hold up cover plate whilst remaining elements do not soften during filling |
| EP1620843B8 (en) * | 2003-04-21 | 2015-11-11 | Philips Lighting North America Corporation | Tile lighting methods and systems |
| EP1562221A3 (en) * | 2003-12-03 | 2008-09-17 | Samsung Electronics Co., Ltd. | Flat lamp |
| DE102004039902B3 (en) * | 2004-08-17 | 2006-04-06 | Berger Gmbh | Flat gas discharge lamp, has flat plates forming dielectric layers with dielectrically restricted discharge |
| KR100657902B1 (en) * | 2004-10-13 | 2006-12-14 | 삼성코닝 주식회사 | Flat lamp |
| DE102006026332A1 (en) | 2006-06-02 | 2007-12-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Discharge lamp for dielectrically impeded discharges with rib-like support elements between base plate and ceiling plate |
| DE102006026333A1 (en) | 2006-06-02 | 2007-12-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Discharge lamp for dielectrically impeded discharges with flat discharge vessel |
| DE102006026349A1 (en) * | 2006-06-02 | 2007-12-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Display device with barrier discharge lamp for backlighting |
| KR20080025904A (en) * | 2006-09-19 | 2008-03-24 | 삼성코닝정밀유리 주식회사 | Surface light source, driving method therefor and backlight unit having the same |
| DE102006050136B4 (en) * | 2006-10-25 | 2016-12-15 | Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V. | Method and device for generating positive and / or negative ionized gas analytes for gas analysis |
| WO2008064711A1 (en) * | 2006-11-27 | 2008-06-05 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Sequential dimming of dielectrically impeded discharges |
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- 1998-12-10 TW TW087120518A patent/TW432899B/en active
- 1998-12-11 CA CA002281221A patent/CA2281221A1/en not_active Abandoned
- 1998-12-11 EP EP98966303A patent/EP0976145B1/en not_active Expired - Lifetime
- 1998-12-11 WO PCT/EP1998/008106 patent/WO1999034411A1/en active IP Right Grant
- 1998-12-11 DE DE59807472T patent/DE59807472D1/en not_active Expired - Fee Related
- 1998-12-11 KR KR1019997007646A patent/KR100355896B1/en not_active IP Right Cessation
- 1998-12-11 AT AT98966303T patent/ATE234506T1/en not_active IP Right Cessation
- 1998-12-11 WO PCT/EP1998/008103 patent/WO1999034409A1/en active IP Right Grant
- 1998-12-11 JP JP53445999A patent/JP3530199B2/en not_active Expired - Lifetime
- 1998-12-11 US US09/355,357 patent/US6388374B1/en not_active Expired - Fee Related
- 1998-12-11 KR KR1019997007647A patent/KR100355897B1/en not_active IP Right Cessation
- 1998-12-11 CA CA002280805A patent/CA2280805C/en not_active Expired - Fee Related
- 1998-12-11 EP EP98966304A patent/EP0995224B1/en not_active Expired - Lifetime
- 1998-12-11 JP JP11534456A patent/JP2000510645A/en active Pending
- 1998-12-11 HU HU0002078A patent/HUP0002078A3/en unknown
- 1998-12-11 CN CN98802745A patent/CN1248345A/en active Pending
- 1998-12-11 DE DE59809933T patent/DE59809933D1/en not_active Expired - Lifetime
- 1998-12-11 US US09/355,521 patent/US6483255B1/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| TW432899B (en) | 2001-05-01 |
| EP0926705A1 (en) | 1999-06-30 |
| EP0976145A1 (en) | 2000-02-02 |
| JP3530199B2 (en) | 2004-05-24 |
| DE19817479A1 (en) | 1999-06-24 |
| CA2281221A1 (en) | 1999-07-08 |
| EP0995224B1 (en) | 2003-10-15 |
| CA2280805C (en) | 2007-03-13 |
| JP2000510645A (en) | 2000-08-15 |
| DE59809933D1 (en) | 2003-11-20 |
| CA2280805A1 (en) | 1999-07-08 |
| CN1248345A (en) | 2000-03-22 |
| EP0995224A1 (en) | 2000-04-26 |
| KR100355896B1 (en) | 2002-10-18 |
| US6388374B1 (en) | 2002-05-14 |
| KR20000075586A (en) | 2000-12-15 |
| US6483255B1 (en) | 2002-11-19 |
| KR20000075587A (en) | 2000-12-15 |
| ATE234506T1 (en) | 2003-03-15 |
| WO1999034411A1 (en) | 1999-07-08 |
| JP2000510646A (en) | 2000-08-15 |
| DE59807472D1 (en) | 2003-04-17 |
| KR100355897B1 (en) | 2002-10-18 |
| WO1999034409A1 (en) | 1999-07-08 |
| HUP0002078A2 (en) | 2000-10-28 |
| HUP0002078A3 (en) | 2003-03-28 |
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