EP0912992A2 - Spot plat - Google Patents

Spot plat

Info

Publication number
EP0912992A2
EP0912992A2 EP98925421A EP98925421A EP0912992A2 EP 0912992 A2 EP0912992 A2 EP 0912992A2 EP 98925421 A EP98925421 A EP 98925421A EP 98925421 A EP98925421 A EP 98925421A EP 0912992 A2 EP0912992 A2 EP 0912992A2
Authority
EP
European Patent Office
Prior art keywords
anode
strips
flat radiator
flat
electrodes
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
EP98925421A
Other languages
German (de)
English (en)
Other versions
EP0912992B1 (fr
Inventor
Frank Vollkommer
Lothar Hitzschke
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.)
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 EP0912992A2 publication Critical patent/EP0912992A2/fr
Application granted granted Critical
Publication of EP0912992B1 publication Critical patent/EP0912992B1/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
    • 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.
  • the invention also relates to a system comprising this flat radiator and a voltage source according to the preamble of claim 10.
  • a flat radiator is known from DE-OS 195 26 211, in which strip-shaped electrodes are arranged on the outer wall of the discharge vessel.
  • the radiator is operated with the aid of a sequence of active power pulses separated by pause times.
  • a multiplicity of similar discharges similar to delta-like ( ⁇ ) burn in a plan view, that is to say perpendicular to the plane in which the electrodes are arranged, between adjacent electrodes.
  • These individual discharges are lined up along the electrodes, each widening in the direction of the (current) anode.
  • an overlay of two delta-shaped structures appears visually.
  • the number of individual discharge structures can be influenced, inter alia, by the electrical power that is coupled in.
  • FIG. 1 In order to be able to recognize the details better, only a section of the electrode area is shown. The aim is to ensure that the individual discharges form spatially denser towards the edges 1-3 of the flat radiator during operation than in the remaining part of the discharge vessel.
  • the cathode strips 4 are specifically shaped such that they have spatially preferred starting points for the individual discharges. These preferred starting points are realized by nose-like extensions 6 facing the respectively adjacent anode 5. They cause locally limited amplifications of the electric field and consequently that the delta-shaped individual discharges 7 ignite only at these points.
  • the second basic realization of an electrode structure for a type I flat radiator aims to increase the luminance of the individual discharges the closer they are to the edge. This is achieved (see the partial schematic representation of the principle in FIG. 2) in that the two anode strips 9a, 9b of each anode pair 9 are widened in the direction of the edges 10, 11 of the flat radiator oriented perpendicularly thereto. Typical values for the widening are approx. Up to a factor of two for the edge areas of the flat radiator and approx. Up to a factor of three for the corner areas.
  • FIG. 3a shows a schematic illustration of a side view of the flat radiator from FIG. 3a.
  • 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 dielectric-impeded on both sides).

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention concerne un spot plat possédant des électrodes à inhibition diélectrique, à savoir des cathodes (12, 15) et des anodes (8; 9a) qui se présentent sous forme de bandes et sont alternées sur la paroi de l'enceinte à décharge (14). Ce spot plat présente entre les cathodes (12; 12, 15) voisines respectivement une anode (9b) supplémentaire, c'est-à-dire qu'une paire d'anodes (9) est respectivement placée entre les cathodes (12; 12, 15). Les cathodes (15) possèdent des protubérances (28) en forme de lobes, qui font face respectivement aux anodes (8) voisines. Ces protubérances sont de plus en plus rapprochées vers les bords (26, 27) du spot plat. En variante ou de façon complémentaire, les deux bandes anodes (9a; 9b) de chaque paire d'anodes sont élargies d'un côté, celui faisant face à la bande correspondante (9b ou 9b). Grâce à ces mesures, la luminance surfacique du spot plat (13) est largement constante jusqu'aux bords (26, 27, 29, 30).
EP98925421A 1997-03-21 1998-03-20 Spot plat Expired - Lifetime EP0912992B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19711893A DE19711893A1 (de) 1997-03-21 1997-03-21 Flachstrahler
DE19711893 1997-03-21
PCT/DE1998/000830 WO1998043278A2 (fr) 1997-03-21 1998-03-20 Spot plat

Publications (2)

Publication Number Publication Date
EP0912992A2 true EP0912992A2 (fr) 1999-05-06
EP0912992B1 EP0912992B1 (fr) 2003-10-15

Family

ID=7824180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925421A Expired - Lifetime EP0912992B1 (fr) 1997-03-21 1998-03-20 Spot plat

Country Status (11)

Country Link
US (1) US6252352B1 (fr)
EP (1) EP0912992B1 (fr)
JP (1) JP3249538B2 (fr)
KR (1) KR100385009B1 (fr)
CN (1) CN1165961C (fr)
DE (2) DE19711893A1 (fr)
DK (1) DK0912992T3 (fr)
ES (1) ES2209149T3 (fr)
HU (1) HU223639B1 (fr)
TW (1) TW414917B (fr)
WO (1) WO1998043278A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636965B4 (de) * 1996-09-11 2004-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Strahlungsquelle und Bestrahlungssystem mit dieser Strahlungsquelle
DE19844720A1 (de) * 1998-09-29 2000-04-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dimmbare Entladungslampe für dielektrisch behinderte Entladungen
DE19845228A1 (de) * 1998-10-01 2000-04-27 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dimmbare Entladungslampe für dielektrisch behinderte Entladungen
EP1104006A3 (fr) 1999-11-23 2001-10-04 Koninklijke Philips Electronics N.V. Ampoule plate
DE10048409A1 (de) 2000-09-29 2002-04-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe mit kapazitiver Feldmodulation
JP3471782B2 (ja) * 2001-02-13 2003-12-02 Ｎｅｃ液晶テクノロジー株式会社 平面型蛍光ランプユニット及びそれを用いた液晶表示装置
KR100437954B1 (ko) * 2002-08-09 2004-07-01 주식회사 엘에스텍 평판형 램프와, 이를 채용한 램프조립체
CN100336160C (zh) * 2005-05-26 2007-09-05 西安交通大学 平面介质阻挡放电荧光灯
FR2890232A1 (fr) * 2005-08-23 2007-03-02 Saint Gobain Lampe plane a decharge coplanaire et utilisations
DE102006026333A1 (de) 2006-06-02 2007-12-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Entladungslampe für dielektrisch behinderte Entladungen mit flachem Entladungsgefäß
DE102006026332A1 (de) * 2006-06-02 2007-12-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Entladungslampe für dielektrisch behinderte Entladungen mit rippenartigen Stützelementen zwischen Bodenplatte und Deckenplatte
US20070290599A1 (en) * 2006-06-14 2007-12-20 Chu-Chi Ting Flat fluorescent lamp and liquid crystal display device thereof
US7586262B2 (en) * 2006-09-15 2009-09-08 Chunghwa Picture Tubes, Ltd. Flat fluorescent lamp and liquid crystal display

Family Cites Families (20)

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Publication number Priority date Publication date Assignee Title
JPS54184065U (fr) * 1978-06-19 1979-12-27
NL8003697A (nl) 1980-06-26 1982-01-18 Philips Nv Werkwijze voor het vervaardigen van een elektrische ontladingsinrichting voorzien van een op een glazen substraat aangebracht elektrodenpatroon en aldus verkregen elektrische ontladingsinrichting.
JPS60172135A (ja) * 1984-02-15 1985-09-05 Mitsubishi Electric Corp 平板状光源
JPS63232261A (ja) 1987-03-20 1988-09-28 Sanyo Electric Co Ltd 平面型蛍光灯
JPS6489242A (en) * 1987-09-30 1989-04-03 Mitsubishi Electric Corp Electrode for discharge light source
NL8800478A (nl) * 1988-02-25 1989-09-18 Philips Nv Lagedrukkwikdampontladingslamp.
CH676168A5 (fr) 1988-10-10 1990-12-14 Asea Brown Boveri
US5266865A (en) * 1989-08-22 1993-11-30 Nec Corporation Structure of lead conductor for third electrode of three-electrode type electroluminescent lamp
JPH03261024A (ja) * 1990-03-09 1991-11-20 Canon Inc 電子放出装置及び画像表示装置
KR930000575B1 (ko) 1990-10-31 1993-01-25 삼성전관 주식회사 플라즈마 표시소자와 그 제조방법
DE4140497C2 (de) 1991-12-09 1996-05-02 Heraeus Noblelight Gmbh Hochleistungsstrahler
US5276378A (en) * 1992-01-10 1994-01-04 Neonix, Inc. Fluorescent light emitting device
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
US5525861A (en) * 1993-04-30 1996-06-11 Canon Kabushiki Kaisha Display apparatus having first and second internal spaces
DE19526211A1 (de) 1995-07-18 1997-01-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben von Entladungslampen bzw. -strahler
JP3576661B2 (ja) 1995-10-27 2004-10-13 Ｎｅｃライティング株式会社 希ガス放電灯
DE19636965B4 (de) 1996-09-11 2004-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Strahlungsquelle und Bestrahlungssystem mit dieser Strahlungsquelle
KR100263773B1 (ko) * 1998-03-23 2000-08-16 구자홍 플라즈마 디스플레이 패널의 유지전극 구조
KR100547427B1 (ko) * 1999-09-14 2006-01-31 주식회사 엘지이아이 냉장고의 홈바도어 자동닫힘장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9843278A2 *

Also Published As

Publication number Publication date
WO1998043278A2 (fr) 1998-10-01
CN1165961C (zh) 2004-09-08
JP3249538B2 (ja) 2002-01-21
EP0912992B1 (fr) 2003-10-15
KR20000015789A (ko) 2000-03-15
US6252352B1 (en) 2001-06-26
HU223639B1 (hu) 2004-10-28
CN1220770A (zh) 1999-06-23
DK0912992T3 (da) 2003-11-24
WO1998043278A3 (fr) 1998-12-23
KR100385009B1 (ko) 2003-08-21
HUP0000674A3 (en) 2003-01-28
TW414917B (en) 2000-12-11
JP2000500917A (ja) 2000-01-25
ES2209149T3 (es) 2004-06-16
DE59809916D1 (de) 2003-11-20
HUP0000674A2 (hu) 2000-06-28
DE19711893A1 (de) 1998-09-24

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