EP1709662A2 - Procede pour realiser des lampes a decharge - Google Patents

Procede pour realiser des lampes a decharge

Info

Publication number
EP1709662A2
EP1709662A2 EP05714868A EP05714868A EP1709662A2 EP 1709662 A2 EP1709662 A2 EP 1709662A2 EP 05714868 A EP05714868 A EP 05714868A EP 05714868 A EP05714868 A EP 05714868A EP 1709662 A2 EP1709662 A2 EP 1709662A2
Authority
EP
European Patent Office
Prior art keywords
layer
functional layer
phosphor
glass solder
base material
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Withdrawn
Application number
EP05714868A
Other languages
German (de)
English (en)
Inventor
Klaus-Dieter Bauer
Frank Vollkommer
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 EP1709662A2 publication Critical patent/EP1709662A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/221—Applying luminescent coatings in continuous layers
    • H01J9/223—Applying luminescent coatings in continuous layers by uniformly dispersing of liquid
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7734—Aluminates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7777—Phosphates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/7797—Borates
    • 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
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44—Devices characterised by the luminescent material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/46—Devices characterised by the binder or other non-luminescent constituent of the luminescent material, e.g. for obtaining desired pouring or drying properties
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases

Definitions

  • the invention relates to a method for producing a discharge lamp, in particular a dielectric barrier discharge lamp.
  • discharge lamps can have one or more functional layers, for example a fluorescent layer in the case of fluorescent lamps or an additional reflection layer in the case of aperture lamps.
  • dielectric barrier discharge lamps i.e. Lamps which are operated on the basis of so-called dielectrically impeded discharges are, if electrodes are arranged inside the discharge vessel (internal electrodes), a dielectric layer, e.g. a glass solder layer, which separates the internal electrodes from the discharge medium.
  • glass solder layers are also used for the gas-tight joining of the individual vessel parts of flat discharge lamps, e.g. by applying a frame-like glass solder layer to a first vessel plate and then fusing it to the second vessel plate.
  • the base material that is to say, for example a phosphor, a reflection material or a glass solder in powder form
  • the viscosity of the paste is influenced, among other things, by the type and proportion of solvent selected and depends on the technique used to apply the respective layer, eg screen printing, spraying or dispensing. prob- The residue-free expulsion of the binder from the respective layer, the so-called debinding, which is carried out before filling with the discharge medium and the gas-tight sealing of the discharge vessel, is lematic.
  • Residue-free debinding is important because the discharge medium must remain as pure as possible to ensure trouble-free and efficient lamp operation and a long lamp life.
  • Debinding is usually carried out by heating the coated parts or the prefabricated lamp vessel and removing the expelled binder components, for example by gas flow, evacuation or the like.
  • the baking time and the temperature level must be selected according to the type of binder used to ensure residue-free debinding. However, high temperatures can also damage phosphors.
  • the softening temperature of the glasses and glass solders used must be significantly higher than the debinding temperature.
  • the document EP 1 239 507 A1 discloses the production of a flat fluorescent lamp based on dielectrically impeded discharges, the phosphor layer being sprayed on.
  • the thin phosphor suspension used for this purpose consists of 40 to 60 percent by weight of phosphor, 1 to 5 percent by weight of an organic binder, e.g. Ethyl cellulose or nitro cellulose, as well as a solvent, e.g. Ethanol, terpineol or 2- (2-butoxyethoxy) ethyl acetate (BCA).
  • the object of the present invention is to provide a method for producing a discharge lamp which is improved with regard to functional layers to be applied. This object is achieved in a method for producing a discharge lamp with the following method steps: a. Providing a discharge vessel, b. Production of a paste for a functional layer from the following components: o powdery base material, o polyalkylene carbonate as binder, o solvent, c. Forming the functional layer by applying the paste to at least part of the wall of the discharge vessel, ie. optionally repeating steps b and c if more than one functional layer is provided.
  • the powdery base material used depends on the type of functional layer to be applied.
  • a phosphor layer it consists of a phosphor or phosphor mixture, to form a reflection layer from a reflection material, for example Al 2 O 3 or TiO 2 , or a mixture of reflectors or hybrid from two or more reflection layers, to form a dielectric layer as a functional layer from a glass solder, for example Pb-B-Si-O, or a glass solder mixture.
  • the polyalkylene carbonate used as a binder comprises the two variants polyethylene carbonate and polypropylene carbonate, which are offered, for example, by Empower Materials under the names QPAC 25® and QPAC 40®.
  • the weight fraction for the binder polyalkylene carbonate based on the total weight of the paste has a value of approx. 0.1 to 5%, in particular 0.5 to 3%, very particularly 0.5 to 2% proven suitable.
  • QPAC is, among other things, that residue-free debinding takes place even at relatively low temperatures of approx. 250 to 300 ° C. On the one hand, this allows lamps with a high degree of purity to be produced relatively easily inside the discharge vessel. On the other hand, this increases the selection of suitable glass solders with a softening temperature that is above the debinding temperature.
  • the solvent comes e.g. Ethyl acetate and / or propylene glycol diacetate (PGDA) into consideration.
  • PGDA propylene glycol diacetate
  • the choice of solvent or mixture depends in each individual case on the desired spray properties, the wettability and the runoff behavior of the finished suspension and the preferred rate of evaporation of the solvent. These properties in turn have to be matched to the shape of the primary material to be coated.
  • 1a is a sectional view of the bottom and front plate of the discharge vessel of a flat dielectric barrier discharge lamp
  • 1c is an enlargement of a detail of the front panel
  • FIGS. 1a to 2 relate to the production of a flat dielectric barrier.
  • FIG. 1 shows the flat base plate 1 on which the nubbed front plate 2 is to lie and then the two plates are to be connected to one another in a gastight manner to form the discharge vessel.
  • the inside of the front plate 2 which has a “nub structure” disclosed in the already mentioned US 2002/0163311, is provided with a three-band phosphor layer 3 (not recognizable in FIG. 1a; see enlargement in FIG. 1b).
  • the three powdered phosphor components barium magnesium aluminate (BaMgAl ⁇ 0 O ⁇ 7 : Eu), lanthanum phosphate (LaPO 4 : (Tb, Ce)) and gadolinium yttrium borate ((Gd, Y) BO 3 : Eu) at 30 percent by weight with 1.3 percent by weight QPAC 40, 55.7 percent by weight PGDA and 13 percent by weight ethyl acetate mixed and then sprayed onto the front panel 2.
  • the special composition of the above-mentioned phosphor suspension achieves the required properties with regard to spray behavior, wetting ability and run-off behavior, which are prerequisites for a uniform spray coating of the knob structure of the front plate 2 mentioned.
  • a reflection layer 4 is first applied, and a three-band fluorescent layer 3, corresponding to that on the front plate 2, is applied (not recognizable in FIG. 1 a; see enlargement in FIG. 1 c).
  • the layer weights for the phosphor layer and the reflection layer are approximately 3 mg / cm 2 and 10 mg / cm 2, respectively.
  • a mixture of 35 percent by weight Al 2 O 3 , 1.5 percent by weight QPAC 40 and 63.5 percent by weight PGDA is produced and applied.
  • a glass solder bead 5 (see FIG. 1a) is applied to the base plate 1 in a frame-like manner at its outer edge.
  • a mixture of 81 percent by weight of powdered Pb-B-Si-O glass solder, 1 percent by weight of QPAC 40 and 18 percent by weight of PGDA is used for this.
  • layers 3 to 5 are debound at a temperature of 280 ° C. for 1 hour in an air-flow oven (not shown).
  • the base plate 1 and the front plate 2 are then joined in a gas-tight manner in a discharge medium atmosphere, here pure xenon, for which purpose the frame-shaped glass solder layer 5 is softened by heating.
  • the electrode tracks are still applied to the outside of the base plate 1 (not shown).
  • WO 03/017312 already cited.
  • the dielectric layer then required for separating the electrodes from the discharge medium can be implemented by applying a corresponding glass solder layer - in the same way as described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

La présente invention concerne un procédé pour réaliser une lampe à décharge, comprenant les étapes suivantes: mise à disposition d'un récipient de décharge; préparation d'une pâte destinée à constituer une couche fonctionnelle, à partir des composantes suivantes: matière de base poudreuse, polyalkylène carbonate en tant que liant, et solvant; formation de la couche fonctionnelle par application de la pâte sur au moins une partie de la paroi du récipient de décharge. Du type de la matière de base dépend le type de la couche fonctionnelle, par exemple couche fluorescente, couche réfléchissante ou couche de brasure de verre. L'utilisation d'un polyalkylène carbonate en tant que liant permet le retrait du liant sans résidus à des températures relativement basses, et ainsi la réalisation de lampes efficaces.
EP05714868A 2004-01-28 2005-01-14 Procede pour realiser des lampes a decharge Withdrawn EP1709662A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004004478A DE102004004478A1 (de) 2004-01-28 2004-01-28 Verfahren zur Herstellung von Entladungslampen
PCT/DE2005/000044 WO2005073999A2 (fr) 2004-01-28 2005-01-14 Procede pour realiser des lampes a decharge

Publications (1)

Publication Number Publication Date
EP1709662A2 true EP1709662A2 (fr) 2006-10-11

Family

ID=34801197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05714868A Withdrawn EP1709662A2 (fr) 2004-01-28 2005-01-14 Procede pour realiser des lampes a decharge

Country Status (9)

Country Link
US (1) US20070161317A1 (fr)
EP (1) EP1709662A2 (fr)
JP (1) JP4372159B2 (fr)
KR (1) KR101101688B1 (fr)
CN (1) CN101053052B (fr)
CA (1) CA2554454A1 (fr)
DE (1) DE102004004478A1 (fr)
TW (1) TWI285391B (fr)
WO (1) WO2005073999A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007009192A1 (de) * 2007-02-26 2008-08-28 Osram Gesellschaft mit beschränkter Haftung Verfahren zum Herstellen einer Entladungslampe, insbesondere einer Flachlampe
CN117613516B (zh) * 2024-01-11 2024-04-16 溧阳中科海钠科技有限责任公司 一种隔膜及其制备方法与应用

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717781A (en) * 1969-09-19 1973-02-20 Sylvania Electric Prod Aperture fluorescent lamp having uniform surface brightness
US4954937A (en) * 1988-09-08 1990-09-04 Tomoegawa Paper Co., Ltd. Lighting lamp
DE69323026T2 (de) * 1992-10-08 1999-07-01 Koninkl Philips Electronics Nv Hochdruckentladungslampe
US5744907A (en) * 1996-01-19 1998-04-28 Micron Display Technology, Inc. Binders for field emission displays
US6111351A (en) * 1997-07-01 2000-08-29 Candescent Technologies Corporation Wall assembly and method for attaching walls for flat panel display
DE19826809A1 (de) * 1998-06-16 1999-12-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Dielektrische Schicht für Entladungslampen und zugehöriges Herstellungsverfahren
DE10006750A1 (de) * 2000-02-15 2001-08-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Herstellungsverfahren für eine flache Gasentladungslampe
DE10009916A1 (de) * 2000-03-01 2001-09-13 Philips Corp Intellectual Pty Plasmabildschirm mit blauem Leuchtstoff
JP3290645B2 (ja) * 2000-05-31 2002-06-10 松下電器産業株式会社 画像表示装置
DE10048187A1 (de) * 2000-09-28 2002-04-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe für dielektrisch behinderte Entladungen mit Stützelementen zwischen einer Bodenplatte und einer Deckenplatte
US6808435B2 (en) * 2000-10-11 2004-10-26 Matsushita Electric Industrial Co., Ltd. Paint for forming insulating film, and plasma display panel using the paint and method of manufacturing the same
KR100393190B1 (ko) * 2001-03-06 2003-07-31 삼성전자주식회사 평판형광램프 제조방법
JP2002328467A (ja) * 2001-05-01 2002-11-15 Tokyo Ohka Kogyo Co Ltd プラズマディスプレイパネルの製造方法
DE10138925A1 (de) * 2001-08-08 2003-02-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Herstellen einer Entladungslampe
US20030108664A1 (en) * 2001-10-05 2003-06-12 Kodas Toivo T. Methods and compositions for the formation of recessed electrical features on a substrate
JP3743561B2 (ja) * 2002-02-05 2006-02-08 富士写真フイルム株式会社 放射線像変換パネル
DE10219951A1 (de) * 2002-05-03 2003-11-13 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Verkapselung eines Bauelements auf Basis organischer Halbleiter
JP4345100B2 (ja) 2003-04-30 2009-10-14 日本電気硝子株式会社 ガラスペースト

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005073999A2 *

Also Published As

Publication number Publication date
CN101053052B (zh) 2010-06-16
TW200534324A (en) 2005-10-16
DE102004004478A1 (de) 2005-08-18
US20070161317A1 (en) 2007-07-12
WO2005073999A3 (fr) 2007-04-19
JP4372159B2 (ja) 2009-11-25
CN101053052A (zh) 2007-10-10
WO2005073999A2 (fr) 2005-08-11
CA2554454A1 (fr) 2005-08-11
KR101101688B1 (ko) 2011-12-30
JP2007524200A (ja) 2007-08-23
KR20060131843A (ko) 2006-12-20
TWI285391B (en) 2007-08-11

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