EP0901687A1 - Lampe plate - Google Patents

Lampe plate

Info

Publication number
EP0901687A1
EP0901687A1 EP98925420A EP98925420A EP0901687A1 EP 0901687 A1 EP0901687 A1 EP 0901687A1 EP 98925420 A EP98925420 A EP 98925420A EP 98925420 A EP98925420 A EP 98925420A EP 0901687 A1 EP0901687 A1 EP 0901687A1
Authority
EP
European Patent Office
Prior art keywords
anodes
region
anode
flat radiator
discharge vessel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98925420A
Other languages
German (de)
English (en)
Other versions
EP0901687B1 (fr
Inventor
Frank Vollkommer
Lothar Hitzschke
Jens Mücke
Rolf Siebauer
Simon Jerebic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitzschke Lothar Dr
Vollkommer Frank Dr
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0901687A1 publication Critical patent/EP0901687A1/fr
Application granted granted Critical
Publication of EP0901687B1 publication Critical patent/EP0901687B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • 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
    • 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
    • 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

Definitions

  • the invention is based on a flat radiator according to the preamble of claim 1.
  • radiators such as disclosed in EP 0 363 832 and in DE-OS 195 26 211.
  • Such radiators have at least one electrode separated from the discharge space of the radiator by dielectric material.
  • Such electrodes are also referred to in the following as "dielectric electrodes”.
  • flat radiator here means radiators with a flat geometry that emit light, i.e. visible electromagnetic radiation, or also ultraviolet (UV) and vacuum ultraviolet (VUV) radiation.
  • UV ultraviolet
  • VUV vacuum ultraviolet
  • such radiation sources are suitable for general and auxiliary lighting, for example residential and office lighting or backlighting of displays, for example LCDs (Liquid Crystal Displays), for traffic and signal lighting, for UN radiation, eg disinfection or photolytics.
  • LCDs Liquid Crystal Displays
  • UN radiation eg disinfection or photolytics.
  • EP 0 363 832 discloses a UV high-power radiator with elongated electrodes connected in pairs to the two poles of a high-voltage source.
  • the electrodes are separated from one another and from the discharge space of the radiator by dielectric material.
  • the elongated electrodes with different polarities are arranged alternately next to one another, which enables flat-type discharge configurations with relatively flat discharge vessels to be implemented.
  • WO 94/23442 discloses a method for operating an incoherently emitting radiation source, in particular a discharge lamp, by means of dielectrically impeded discharge.
  • the operating method provides a sequence of active power pulses, the individual active power pulses being separated from one another by dead times.
  • unipolar pulses a large number of individual delta-shaped discharges are formed, lined up along the elongated electrodes.
  • the advantage of this pulsed mode of operation is the high efficiency of the radiation generation.
  • the invention proposes the separation of those anodes which are adjacent to two cathodes directly at the same distance into two anodes each. In other words, an additional anode is arranged between each such pair of cathodes.
  • FIGS. 1 and 2 A section of a conventional flat radiator according to the invention and a conventional flat radiator are shown schematically.
  • the lengths of the electrodes are approximately limited to the extent of a delta-shaped individual discharge.
  • the electrodes are typically significantly longer, so that a plurality of individual discharges burns along the electrodes during operation.
  • the length of the electrodes does not play a decisive role in explaining the principle of the invention.
  • Figures 1 and 2 represent the basic relationships per unit length of the electrodes.
  • each anode A ,, A ' is at most one cathode K or K ⁇ + , immediately adjacent.
  • FIG. 2 shows only one of several possible discharge structures.
  • each anode pair A_, A ' is smaller than the distance between the respective anode A_ or A' and the immediately adjacent cathode K or K 1 + r.
  • a good value for the mutual distance is the approximate width of the anode strips.
  • the two anodes A,, A ' are designed as a fork-shaped double anode.
  • the double anode has an elongated first and second region, which are at a predetermined distance are arranged to each other. The first and the second area are connected to one another by a third area.
  • FIG. 1 shows a schematic representation of the principle of the invention
  • FIG. 2 shows a schematic representation of the principle of the prior art
  • FIG. 3a shows a schematic representation of the top view of an exemplary embodiment of a flat radiator according to the invention
  • Figure 3b is a schematic representation of the cross section of the flat radiator from Figure 3a.
  • FIGS. 3a, 3b show a schematic representation of a top view or the cross section along the line BB of a UV / VUV flat radiator 4, ie a flat “discharge lamp”, which is designed for the efficient emission of UV or VUV radiation
  • the flat radiator 4 consists of a flat discharge vessel 5 with a rectangular base area, four strip-shaped metallic cathodes 6 (-) and three elongated, fork-shaped double anodes 7 (+)
  • the bottom plate 8 and the cover 9 are connected to one another in a gastight manner in the region of their peripheral edges and thus enclose the gas filling of the flat radiator 4.
  • the gas filling consists of xenon with a filling pressure of 10 kPa
  • Double anodes 7 each consist of two mutually parallel strips 7a, 7b, which on their one End are merged into a common wide strip 7c.
  • the cathodes 6 and double anodes 7 are applied parallel to one another on the inner wall of the base plate 8.
  • the wide end strips 7c of the double anodes 7 and the ends of the cathodes 6 are passed gas-tight out of the discharge vessel 5 and serve there as connections for a voltage source.
  • the double anodes 7 within the discharge vessel 5 are each completely covered with a glass layer 10, the thickness of which is approximately 150 ⁇ m.
  • the respective distance d between cathode 6 and the immediately adjacent strip 7a or 7b of the double anode 7 is approximately 10 mm.
  • the mutual distance g of the two parallel strips 7a, 7b is approximately 3 mm.
  • a large number of individual discharges (not shown in FIGS. 3a, 3b) form during operation. These individual discharges burn between the respective cathode 6 and the corresponding immediately adjacent strip 7a or 7b of the associated double anode 7.
  • the gain in power density that can be coupled in is almost 75% in comparison to arrangements previously used without a double anode (and the same geometrical dimensions of the discharge vessel). .
  • a variant differs from the flat radiator shown in FIGS. 3a, 3b only in that not only the anodes but also the cathodes are separated from the inside of the discharge vessel by a dielectric layer (discharge which is dielectrically impeded on both sides).
  • the inner wall of the discharge vessel is completely coated with a phosphor or phosphor mixture, which converts the UV / VUV radiation generated by the discharge into visible light.
  • a light-reflecting layer of Al 2 O a or TiO z is applied to the inner wall of the base plate. They serve to increase the luminance on the top side of the spotlight.
  • This variant is a flat fluorescent lamp that is suitable for general lighting or backlighting of displays, eg LCD (Liquid Crystal Display).

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

L'invention concerne une lampe plate (4) dont les électrodes sont séparées de la décharge par une couche diélectrique. Cette lampe comprend un contenant (5) à décharge réalisé dans un matériau électriquement non conducteur. Des électrodes (6,7) en forme de bandes sont placées sur la paroi du contenant (5) à décharge, les cathodes (6) et anodes (7a) étant alternativement juxtaposées et au moins les anodes étant séparées de l'intérieur du contenant (5) à décharge par un matériau diélectrique (10). Une anode (7b) supplémentaire est respectivement placée entre des cathodes (6) voisines, c'est-à-dire qu'une paire d'anodes (7a, 7b) est respectivement placée entre les cathodes (6) voisines. On obtient ainsi une structure à décharge uniforme grâce à une utilisation optimale du contenant à décharge.
EP98925420A 1997-03-21 1998-03-20 Lampe plate Expired - Lifetime EP0901687B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19711892 1997-03-21
DE19711892A DE19711892A1 (de) 1997-03-21 1997-03-21 Flachstrahler
PCT/DE1998/000829 WO1998043279A1 (fr) 1997-03-21 1998-03-20 Lampe plate

Publications (2)

Publication Number Publication Date
EP0901687A1 true EP0901687A1 (fr) 1999-03-17
EP0901687B1 EP0901687B1 (fr) 2002-06-26

Family

ID=7824179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925420A Expired - Lifetime EP0901687B1 (fr) 1997-03-21 1998-03-20 Lampe plate

Country Status (12)

Country Link
US (1) US6222317B1 (fr)
EP (1) EP0901687B1 (fr)
JP (1) JP3037441B2 (fr)
KR (1) KR100281343B1 (fr)
CN (1) CN1165958C (fr)
CA (1) CA2255758C (fr)
DE (2) DE19711892A1 (fr)
DK (1) DK0901687T3 (fr)
ES (1) ES2179503T3 (fr)
HU (1) HU223172B1 (fr)
TW (1) TW412772B (fr)
WO (1) WO1998043279A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19817478B4 (de) 1998-04-20 2004-03-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Flache Entladungslampe und Verfahren zu ihrer Herstellung
DE19826809A1 (de) * 1998-06-16 1999-12-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dielektrische Schicht für Entladungslampen und zugehöriges Herstellungsverfahren
DE19844720A1 (de) * 1998-09-29 2000-04-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dimmbare Entladungslampe für dielektrisch behinderte Entladungen
DE19919363A1 (de) * 1999-04-28 2000-11-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe mit Abstandshalter
DE19936865A1 (de) * 1999-08-05 2001-02-15 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Gasentladungslampe und zugehöriges Herstellungsverfahren
DE19936863A1 (de) * 1999-08-05 2001-02-15 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Herstellungsverfahren für eine Gasentladungslampe
DE19936864A1 (de) 1999-08-05 2001-02-15 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Einsetzen eines Pumpstengels in ein Entladungsgefäß
US7146290B2 (en) * 2000-11-27 2006-12-05 Uview Ultraviolet Systems, Inc. Apparatus and method for diagnosing performance of air-conditioning systems
KR100741898B1 (ko) * 2000-12-22 2007-07-24 엘지.필립스 엘시디 주식회사 평판형 형광램프 및 그 제조방법
DE10134965A1 (de) * 2001-07-23 2003-02-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Flache Entladungslampe
KR100456658B1 (ko) * 2002-04-29 2004-11-10 주식회사 엘에스텍 면광원 장치
KR100650491B1 (ko) * 2004-02-27 2006-11-27 유양산전 주식회사 평판형 형광램프
DE102004039902B3 (de) * 2004-08-17 2006-04-06 Berger Gmbh Flächige Gasentladungslampe und Verfahren zu ihrer Herstellung
DE102004055328B3 (de) * 2004-11-16 2006-04-13 Institut für Niedertemperatur-Plasmaphysik e.V. Vorrichtung nach dem Prinzip einer dielektrisch behinderten Entladung zur Strahlungserzeugung
TW200636337A (en) * 2005-04-04 2006-10-16 Delta Optoelectronics Inc Electrode structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676168A5 (fr) 1988-10-10 1990-12-14 Asea Brown Boveri
US5343116A (en) * 1992-12-14 1994-08-30 Winsor Mark D Planar fluorescent lamp having a serpentine chamber and sidewall electrodes
DE4311197A1 (de) 1993-04-05 1994-10-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben einer inkohärent strahlenden Lichtquelle
US5479069A (en) * 1994-02-18 1995-12-26 Winsor Corporation Planar fluorescent lamp with metal body and serpentine channel
KR200171939Y1 (ko) * 1994-10-25 2000-03-02 손욱 면광원장치
DE19526211A1 (de) * 1995-07-18 1997-01-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben von Entladungslampen bzw. -strahler
CA2256346C (fr) * 1997-03-21 2006-05-16 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Tube fluorescent plat destine a l'eclairage de fond et dispositif d'affichage a cristaux liquides dote de ce tube fluorescent plat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9843279A1 *

Also Published As

Publication number Publication date
HUP0000626A2 (hu) 2000-06-28
JPH11514148A (ja) 1999-11-30
TW412772B (en) 2000-11-21
KR20000015786A (ko) 2000-03-15
DE59804564D1 (de) 2002-08-01
JP3037441B2 (ja) 2000-04-24
DK0901687T3 (da) 2002-08-19
HU223172B1 (hu) 2004-03-29
KR100281343B1 (ko) 2001-03-02
CN1220769A (zh) 1999-06-23
ES2179503T3 (es) 2003-01-16
WO1998043279A1 (fr) 1998-10-01
EP0901687B1 (fr) 2002-06-26
DE19711892A1 (de) 1998-09-24
HUP0000626A3 (en) 2003-02-28
CA2255758A1 (fr) 1998-10-01
US6222317B1 (en) 2001-04-24
CN1165958C (zh) 2004-09-08
CA2255758C (fr) 2006-01-24

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