EP1256971A2 - Gasentladungslampe - Google Patents
Gasentladungslampe Download PDFInfo
- Publication number
- EP1256971A2 EP1256971A2 EP02100454A EP02100454A EP1256971A2 EP 1256971 A2 EP1256971 A2 EP 1256971A2 EP 02100454 A EP02100454 A EP 02100454A EP 02100454 A EP02100454 A EP 02100454A EP 1256971 A2 EP1256971 A2 EP 1256971A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas discharge
- discharge lamp
- ceramic material
- batio
- doping
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
-
- 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
-
- 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 relates to a gas discharge lamp with at least one capacitive Coupling structure.
- Gas discharge lamps of this type are generally made of one discharge vessel with two ceramic electrodes are formed, which are melted into the vessel. In the jar there is a discharge gas. To stimulate gas discharge by emission of Various modes of operation are known to electrons.
- Glow emission can also result from the emission of electrons in a strong gas discharge electric field or directly by ion bombardment (ion-induced secondary emission) are caused.
- capacitive Coupling structures used as electrodes. These electrodes are made of a dielectric Formed material that has contact with the discharge gas on one side and on the other side is electrically conductively connected to an external circuit. By an AC voltage applied to the electrodes winds in the discharge vessel alternating electric field generated, in which the electrons move and in known Way to stimulate a gas discharge.
- the coupling structures consist of a ferroelectric ceramic.
- An object of the invention is to provide a gas discharge lamp to create the type mentioned, their operating characteristics in particular on the light output are further improved.
- a gas discharge lamp is to be created, which compared to the state of the art can operate higher operating temperatures.
- a gas discharge lamp with at least one capacitive coupling structure in that the coupling structure comprises a ceramic material that has pure BaTiO 3 .
- the coupling structure comprises a ceramic material that has pure BaTiO 3 .
- pure is to be understood as meaning BaTiO 3 which is not doped and has no zirconium.
- a particular advantage of this solution is that the operating temperature of gas discharge lamps with this ceramic can be more than 100 ° C, while in the above-mentioned prior art is limited to approximately 80 ° C.
- the Curie temperature of ceramic material can be increased to over 130 ° C.
- a coercive field strength of less than 80 V / mm and a saturation polarization of at least 17 ⁇ C / cm 2 can be achieved.
- the gas discharge lamp shown in FIG. 1 has an essentially tubular shape Discharge vessel 1, for example made of quartz glass, the inner surface of which with a luminescent layer is occupied and that a discharge space with a discharge gas includes. At its opposite axial ends, the vessel is separated by one capacitive coupling structure completed.
- the coupling structures expose each other two substantially disc-shaped elements 2, 3 together, the first element 2 adjoins the discharge space and the second element 3 on the outside of the vessel 1 lies.
- the first element 2 is formed by a ceramic material, while the second element 3 represents an electrically conductive layer, for example made of conductive silver, on which Connection wires 4 for connection to an AC voltage source 5 are attached.
- the two coupling structures act like one due to their disc-shaped elements Plate capacitor.
- the application of an AC voltage forms in the discharge vessel an alternating electrical field, which in a known manner an excitation of the Gas discharge and the subsequent continuous operation of the lamp causes.
- the operating properties of the lamp are decisively determined by the ceramic material of the coupling structures. To optimize these properties, the material should have the highest possible saturation polarization P S and a high dielectric constant. Furthermore, the hysteresis loop should be as rectangular as possible. Finally, a Curie temperature T C above the operating temperature of the lamp and a coercive field strength E C below the operating voltage of the lamp are required.
- a ceramic material is therefore used for the coupling structures instead of the above-mentioned Ba (Zi 1-x Zr x ) O 3 , which has pure BaTiO 3 , that is to say without doping and without zirconium.
- This material has a Curie temperature of around 130 ° C.
- the Curie temperature can rise can be increased even further.
- the BaTiO 3 can be at least partially doped with donors / acceptors.
- the barium doping preferably remains less than 2%, while the manganese doping can be in the range between 0.01 and 1%.
- FIG. 2 shows the course of the coercive field strength E C that is achieved as a function of the
- FIG. 3 finally shows the course of the saturation polarization P S for such a doping.
- values of 17 ⁇ C / cm 2 and more can be achieved in a range between about 0.35 and about 0.75% barium.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
Claims (8)
- Gasentladungslampe mit mindestens einer kapazitiven Einkoppelstruktur,
dadurch gekennzeichnet, dass die Einkoppelstruktur (2,3) ein keramisches Material umfasst, das reines BaTiO3 aufweist. - Gasentladungslampe nach Anspruch 1,
dadurch gekennzeichnet, dass das keramische Material BaTiO3 aufweist, bei dem das Barium ganz oder teilweise durch Blei ersetzt ist. - Gasentladungslampe nach Anspruch 1,
dadurch gekennzeichnet, dass das keramische Material BaTiO3 aufweist, das an der Titan-Stelle mit Mangan dotiert ist. - Gasentladungslampe nach Anspruch 3,
dadurch gekennzeichnet, dass zur Dotierung an der Titan-Stelle zwischen etwa 0,01 und 1 % Mangan vorgesehen sind. - Gasentladungslampe nach Anspruch 1,
dadurch gekennzeichnet, dass das keramische Material BaTiO3 aufweist, das mit Barium dotiert ist, wobei die Bariumdotierung weniger als 2 % beträgt. - Gasentladungslampe nach Anspruch 5,
dadurch gekennzeichnet, dass als Dotiermittel BaCO3 vorgesehen ist. - Gasentladungslampe nach Anspruch 1,
dadurch gekennzeichnet, dass das keramische Material BaTiO3 aufweist, das mit Blei dotiert ist, wobei Bleidotierung weniger als 2 % beträgt. - Gasentladungslampe nach Anspruch 1,
dadurch gekennzeichnet, dass das keramische Material BaTiO3 aufweist, das mit Titan dotiert ist, wobei die Titandotierung maximal 2% beträgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10122392 | 2001-05-09 | ||
DE10122392A DE10122392A1 (de) | 2001-05-09 | 2001-05-09 | Gasentladungslampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1256971A2 true EP1256971A2 (de) | 2002-11-13 |
EP1256971A3 EP1256971A3 (de) | 2006-01-25 |
Family
ID=7684072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02100454A Withdrawn EP1256971A3 (de) | 2001-05-09 | 2002-05-07 | Gasentladungslampe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6744204B2 (de) |
EP (1) | EP1256971A3 (de) |
JP (1) | JP2002352773A (de) |
KR (1) | KR20020085823A (de) |
CN (1) | CN1384526A (de) |
DE (1) | DE10122392A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020085823A (ko) * | 2001-05-09 | 2002-11-16 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | 가스 방전 램프 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090046223A1 (en) * | 2006-09-27 | 2009-02-19 | Matsushita Electric Industrial Co., Ltd. | Rare gas fluorescent lamp, lamp lighting apparatus, and liquid crystal display device |
US10424722B2 (en) * | 2015-11-27 | 2019-09-24 | Canon Kabushiki Kaisha | Piezoelectric element, piezoelectric actuator, and electronic apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4517496A (en) * | 1981-03-02 | 1985-05-14 | Mitsubishi Denki Kabushiki Kaisha | Lighting apparatus for a discharge lamp |
EP0774448A1 (de) * | 1995-11-20 | 1997-05-21 | Tam Ceramics, Inc. | Hochtemperaturstabile dielektrische Werkstoff |
EP1043757A1 (de) * | 1999-04-07 | 2000-10-11 | Philips Corporate Intellectual Property GmbH | Gasentladungslampe |
DE19915616A1 (de) * | 1999-04-07 | 2000-10-12 | Philips Corp Intellectual Pty | Gasentladungslampe |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6753632U (de) * | 1968-09-19 | 1969-05-29 | Philips Nv | Niederdruckentladungslampe mit einer den entladungsraum unschliessenden wand, die u.a. aus einen traeger besteht. |
GB2074781B (en) * | 1980-03-13 | 1984-03-14 | Tokyo Shibaura Electric Co | Fluorescent lamp assemblies |
JPH06132009A (ja) * | 1986-06-11 | 1994-05-13 | Tdk Corp | 放電灯装置 |
JPH07142027A (ja) * | 1993-11-17 | 1995-06-02 | Noritake Co Ltd | 放電管 |
JP3762434B2 (ja) * | 1994-11-08 | 2006-04-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 低圧放電ランプ |
WO1997026673A1 (en) * | 1996-01-16 | 1997-07-24 | Durel Corporation | Roll coated el panel |
DE19616408A1 (de) * | 1996-04-24 | 1997-10-30 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Elektrode für Entladungslampen |
DE19945758A1 (de) * | 1999-09-24 | 2001-03-29 | Philips Corp Intellectual Pty | Gasentladungslampe |
DE10122392A1 (de) * | 2001-05-09 | 2002-11-14 | Philips Corp Intellectual Pty | Gasentladungslampe |
-
2001
- 2001-05-09 DE DE10122392A patent/DE10122392A1/de not_active Withdrawn
-
2002
- 2002-05-06 CN CN02121875A patent/CN1384526A/zh active Pending
- 2002-05-07 EP EP02100454A patent/EP1256971A3/de not_active Withdrawn
- 2002-05-07 KR KR1020020024925A patent/KR20020085823A/ko not_active Application Discontinuation
- 2002-05-07 US US10/140,546 patent/US6744204B2/en not_active Expired - Fee Related
- 2002-05-08 JP JP2002132379A patent/JP2002352773A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4517496A (en) * | 1981-03-02 | 1985-05-14 | Mitsubishi Denki Kabushiki Kaisha | Lighting apparatus for a discharge lamp |
EP0774448A1 (de) * | 1995-11-20 | 1997-05-21 | Tam Ceramics, Inc. | Hochtemperaturstabile dielektrische Werkstoff |
EP1043757A1 (de) * | 1999-04-07 | 2000-10-11 | Philips Corporate Intellectual Property GmbH | Gasentladungslampe |
DE19915616A1 (de) * | 1999-04-07 | 2000-10-12 | Philips Corp Intellectual Pty | Gasentladungslampe |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020085823A (ko) * | 2001-05-09 | 2002-11-16 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | 가스 방전 램프 |
Also Published As
Publication number | Publication date |
---|---|
CN1384526A (zh) | 2002-12-11 |
US6744204B2 (en) | 2004-06-01 |
US20020171375A1 (en) | 2002-11-21 |
JP2002352773A (ja) | 2002-12-06 |
KR20020085823A (ko) | 2002-11-16 |
EP1256971A3 (de) | 2006-01-25 |
DE10122392A1 (de) | 2002-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3204859A1 (de) | Elektrolumineszente duennfilmstruktur | |
DE2809449A1 (de) | Heizelement | |
DE2942187A1 (de) | Nichtlineares dielektrisches element | |
DE69016957T2 (de) | Keramischer Körper aus einem Dielektrikum auf Basis von Bariumtitanat. | |
EP1307898A2 (de) | Blitzlampen und blitzlampenaufbau | |
DE2632247C2 (de) | Anordnung zum Betrieb einer elektrischen Entladungslampe mit Wechselstrom | |
DE102005061832A1 (de) | Hochdruckentladungslampe mit verbesserter Zündfähigkeit sowie Hochspannungspulsgenerator | |
DE19913867B4 (de) | Hochdruckdampf-Entladungslampe sowie Verwendung eines Kondensators in einer solchen Hochdruckdampf-Entladungslampe | |
DE19951310A1 (de) | Piezokeramische Übertragungsvorrichtung und Schaltung unter Einsatz derselben | |
DE112018006810T5 (de) | Geräte-transformator vom vakuumkondensator-typ | |
EP1256971A2 (de) | Gasentladungslampe | |
EP3360170B1 (de) | Piezoelektrischer transformator | |
DE69526657T2 (de) | Niederdruckentladungslampe | |
EP1043757B1 (de) | Gasentladungslampe | |
DE102006052715B4 (de) | Verfahren zur Herstellung einer quecksilberfreien Bogenentladungsröhre mit jeweils einem Einkristall an den Elektrodenspitzen | |
DE1646987B2 (de) | Verfahren zum herstellen polykristalliner scheiben-, stabrohr- oder folienfoermiger keramischer kaltleiter-, bzw. dielektrikums- bzw. heissleiterkoerper | |
DE19926482A1 (de) | Piezoelektrische Keramik und hieraus hergestellter piezoelektrischer Transformator | |
DE112019002039T5 (de) | Varistor mit Hochtemperaturanwendungen | |
EP1964157B1 (de) | Hochspannungspulsgenerator für eine hochdruckentladungslampe mit verbesserter zündfähigkeit | |
DE1464274B2 (de) | Verfahren und Spannungsversorgung zum Betrieb einer Festkörperbildverstärkerplatte | |
EP1693865B1 (de) | Hochspannungskondensator | |
DE3512048A1 (de) | Widerstand zum einbau in eine kathodenstrahlroehre | |
WO2007141237A1 (de) | Hochdruckentladungslampe mit verbesserter zündfähigkeit sowie hochspannungspulsgenerator | |
EP1263021A1 (de) | Flüssigkristallbildschirm mit verbesserter Hintergrundbeleuchtung | |
EP2116111B1 (de) | Hochspannungspulsgenerator und hochdruckentladungslampe mit derartigem generator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V. Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20060725 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB |
|
17Q | First examination report despatched |
Effective date: 20061002 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20091201 |