EP1233438A2 - Ecran à plasma à luminance accrue - Google Patents

Ecran à plasma à luminance accrue Download PDF

Info

Publication number
EP1233438A2
EP1233438A2 EP02100135A EP02100135A EP1233438A2 EP 1233438 A2 EP1233438 A2 EP 1233438A2 EP 02100135 A EP02100135 A EP 02100135A EP 02100135 A EP02100135 A EP 02100135A EP 1233438 A2 EP1233438 A2 EP 1233438A2
Authority
EP
European Patent Office
Prior art keywords
layer
plasma
light
light reflecting
reflecting layer
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Withdrawn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
EP02100135A
Other languages
German (de)
English (en)
Inventor
Helmut Dr. Bechtel
Thomas Dr. Jüstel
Harald Dr. Gläser
Joachim Opitz
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Corporate Intellectual Property GmbH
Koninklijke Philips Electronics NV
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 Philips Corporate Intellectual Property GmbH, Koninklijke Philips Electronics NV filed Critical Philips Corporate Intellectual Property GmbH
Publication of EP1233438A2 publication Critical patent/EP1233438A2/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/44—Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
    • H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/44—Optical arrangements or shielding arrangements, e.g. filters or lenses
    • H01J2211/442—Light reflecting means; Anti-reflection means

Definitions

  • the invention relates to a plasma screen equipped with a front panel, the one Glass plate on which a dielectric layer and a protective layer are applied, has, with a carrier plate equipped with a phosphor layer, with a rib structure, the space between the front plate and the carrier plate in plasma cells, which with a gas are filled, split, with one or more electrode arrays on the Front plate and the carrier plate for generating silent electrical discharges in the Plasma cells.
  • Plasma screens allow color images with high resolution, large screen diagonal and are of compact design.
  • a plasma screen has a hermetic sealed glass cell, which is filled with a gas, with electrodes arranged in a grid on. Applying an electrical voltage causes a gas discharge that produces light in the ultraviolet range. This light can be absorbed by phosphors visible light converted and through the front panel of the glass cell to the viewer be emitted.
  • Plasma screens are divided into two classes: DC plasma screens and AC plasma screens.
  • DC plasma screens the electrodes are in the direct Contact with the plasma.
  • AC plasma screens the electrodes are through a dielectric layer separated from the plasma.
  • the dielectric layer is still with one layer covered with MgO.
  • MgO has a high ion-induced secondary electron emission coefficient and thus reduces the ignition voltage of the gas. Moreover MgO is resistant to sputtering due to positively charged plasma ions.
  • an inert gas mixture with xenon as the component generating UV light is mostly used as the gas.
  • the light generated during the plasma discharge is in the vacuum ultraviolet (VUV) range.
  • the emission wavelength of Xe is 147 nm and the emission wavelength of the excited Xe 2 excimer is 172 nm.
  • the luminance of a plasma display largely depends on the efficiency of the VUV light off to stimulate the phosphors.
  • To increase the luminance is in JP 2000-011895 describes a plasma screen which emits UV light on the dielectric layer has a reflective layer.
  • the UV light reflecting layer contains one Layer sequence of materials with different refractive indices. The production these layers are very complex and expensive.
  • the disadvantage is that there is no layer of MgO on the layer reflecting UV light can be applied because the layer of MgO is not transparent to VUV light
  • the invention has for its object a plasma screen with improved To provide luminance.
  • a plasma screen equipped with a front panel, which is a glass plate on which a dielectric layer, a UV light reflecting layer and a protective layer are applied, equipped with a carrier plate a layer of fluorescent material, with a ribbed structure that covers the space between the front panel and Carrier plate divided into plasma cells, which are filled with a gas, with or several electrode arrays on the front plate and the carrier plate for generating silent electrical discharges in which UV light with a wavelength> 172 nm arises in the plasma cells.
  • the silent electrical discharges have UV light with a wavelength between 200 and 350 nm.
  • UV light with a wavelength> 172 nm, especially in the range from 200 to 350 nm, for excitation of the phosphors can be found on the front panel a protective layer can be applied to the UV light reflecting layer, which has an advantageous effect on the ignition voltage of the gas. It is also by the UV light reflective layer increases the luminance of the plasma screen, because UV light, which in Was emitted towards the front panel through the UV light reflecting layer Direction of the phosphors is reflected.
  • the gas is selected from the group of mercury vapor, Ne / N 2 and the noble gas halides.
  • these gases emit light with a wavelength> 172 nm.
  • the UV light reflecting layer selects a material from the group of metal oxides, metal fluorides, metal phosphates, metal polyphosphates, the metal metaphosphate, which contains metal borates and diamond.
  • the UV light reflecting layer has particles with a Contains particle diameter less than 300 nm.
  • the UV light reflecting layer contains particles contains a particle diameter between 20 nm and 150 nm.
  • Particles of this diameter have a significantly larger light scattering in the UV wavelength range than in the visible wavelength range.
  • the UV light reflecting layer has a thickness of 0.5 ⁇ m to 5 ⁇ m having.
  • the thickness of the layer of scattering particles also plays a role.
  • a UV light reflecting layer is obtained in the wavelength range the plasma emission is strongly reflected and in the visible emission range Phosphors transmitted.
  • the front panel 1 shows a plasma cell of an AC plasma screen with a coplanar Arrangement of the electrodes on a front plate 1 and a carrier plate 2.
  • the front panel 1 contains a glass plate 3, on which a dielectric layer 4, on the dielectric layer a UV light reflecting layer 8 and a protective layer 5 are applied thereon.
  • the Protective layer 5 is preferably made of MgO and the dielectric layer 4 is made of, for example PbO-containing glass.
  • On the glass plate 3 are parallel, strip-shaped Discharge electrodes 6, 7 applied, which are covered by the dielectric layer 4.
  • the Discharge electrodes 6, 7 are made of metal or ITO, for example.
  • the carrier plate 2 is off Glass and on the carrier plate 2 are parallel, strip-shaped, perpendicular to the discharge electrodes 6.7 extending address electrodes 11 made of Ag, for example. These are of a phosphor layer 10 that emits light in one of the three primary colors red, green or emitted blue, covered. To do this, the phosphor layer is available in several color segments divided. The red, green or blue emitting color segments are usually the Fluorescent layer 10 applied in the form of vertical strip triplets. The single ones Plasma cells are preferred due to a rib structure 13 with separating ribs dielectric material separated.
  • the maximum of the emitted wavelength> 172 nm is.
  • Light in a wavelength range is preferably used in the plasma discharge generated between 200 and 350 nm.
  • a plasma forms in the plasma region 9, depending on the The composition of the gas generates radiation 12 in the UV range. This radiation 12 stimulates the phosphor layer 10 to glow, the visible light 14 in one of the three Primary colors emitted, which emerges through the front panel 1 and thus one represents a luminous pixel on the screen.
  • the discharge electrodes 6, 7 are applied by means of vapor deposition. Then the dielectric layer 4 applied.
  • oxides, fluorides, phosphates, metaphosphates or polyphosphates of various main group or sub group metals can be used as particles.
  • oxides for example, the oxides of the 1st main group such as Li 2 O or oxides of the 2nd main group such as MgO, CaO, SrO and BaO or oxides of the 3rd main group such as B 2 O 3 and Al 2 O 3 or oxides of 3rd subgroup such as Sc 2 O 3 , Y 2 O 3 and La 2 O 3 or oxides of the 4th main group such as SiO 2 , GeO 2 and SnO 2 or oxides of the 4th subgroup such as TiO 2 , ZrO 2 and HfO 2 or mixed oxides such as MgAl 2 O 4 , CaAl 2 O 4 or BaAl 2 O 4 can be used.
  • Fluorides of the 1st main group such as LiF, NaF, KF, RbF and CsF or fluorides of the 1st subgroup such as AgF or fluorides of the 2nd main group such as MgF 2 , CaF 2 , SrF 2 and BaF 2 or fluorides of the 3rd Main group such as AlF 3 or fluoride of the 4th main group such as PbF 2 or fluoride of the 1st subgroup such as CuF 2 or fluoride of the 2nd subgroup such as ZnF 2 or fluoride of the lanthanides such as LaF 3 , CeF 4 , PrF 3 , SmF 3 , EuF 3 , EuF 2 , GdF 3 , YbF 3 and LuF 3 or mixed fluorides such as LiMgF 3 , Na 3 AlF 6 and KMgF 3 are used.
  • Phosphates of the 1st main group such as Li 3 PO 4 , Na 3 PO 4 , K 3 PO 4 , Rb 3 PO 4 and Cs 3 PO 4 or phosphates of the 2nd main group such as Mg 3 (PO 4 ) 2 , Ca.
  • Metaphosphates with a chain length n between 3 and 9 can, for example, be metaphosphates of the 1st main group such as Li 3 (PO 3 ) 3 , Na 3 (PO 3 ) 3 , K 3 (PO 3 ) 3 , Rb 3 (PO 3 ) 3 and Cs 3 (PO 3 ) 3 or metaphosphates of the 2nd main group such as Mg (PO 3 ) 2 , Ca (PO 3 ) 2 , Sr (PO 3 ) 2 and Ba (PO 3 ) 2 or metaphosphates of the 3rd main group such as Al (PO 3 ) 3 or metaphosphates of the 3rd subgroup such as Sc (PO 3 ) 3 , Y (PO 3 ) 3 and La (PO 3 ) 3 or metaphosphates of the 4th subgroup such as Ti 3 (PO 3 ) 4 , Zr 3 ( PO 3 ) 4 and Hf 3 (PO 3 ) 4 or Zn (PO 3 ) 2 can be used.
  • the 1st main group
  • metal cations can also be partially replaced by protons.
  • hydrogen phosphates such as KH 2 PO 4 , NaH 2 PO 4 and NH 4 H 2 PO 4 or diamond can also be used in the UV light reflecting layer 8.
  • the particle diameter of the materials used should be less than 300 nm and is preferably in a range between 20 and 150 nm. It is particularly advantageous if there is a wide distribution over this range of particle diameters as this is the Ratio of reflection of UV light to reflection of the visible in the desired direction affected.
  • the suspensions can also contain precursors to the particles according to the invention, which are then converted into the desired particles by thermal treatment.
  • a suspension with Mg (OH) 2 can be thermally converted into a layer of MgO after application to the dielectric layer 4.
  • the suspensions are preferably prepared in aqueous solution. In some cases it may be necessary to work with organic solvent systems, for example if the powder used reacts chemically with water or dissolves in it.
  • the suspensions are produced depending on the material and particle diameter different ways.
  • One possibility is that the particles are from suitable precursors be synthesized.
  • the other possibility is that the particles are used directly.
  • metal salts are first dissolved in water.
  • the metal salts have the composition MX n ⁇ yH 2 O, where M is, for example, one or more metals selected from the group Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Al, Sc, La, Y , Sn, Ti, Zr, Hf, Ag, Pb, Cu, Pr, Sm, Eu, Gd, Yb, Lu and Zn.
  • X is, for example, one or more of the anions NO 3 - , RO - , R-COO - , - O 2 C-CO 2 - while y is a number greater than or equal to zero and n is an integer between 1 and 4 depending on the oxidation state of the metal cation M is n + .
  • propoxide and butoxide can be used as alkoxides RO - .
  • Acetates, propionates or butyrates, for example, can be used as carboxylates.
  • the particles according to the invention with a particle diameter smaller than 300 nm are then either by thermal treatment such as heating under reflux, by acidic treatment such as adding acetic acid, by alkaline treatment such as addition of sodium hydroxide solution or by passing in ammonia and / or by adding the desired counterion receive.
  • the counterions are added as salts to the aqueous metal salt solution and can be, for example, ammonium salts such as NH 4 F or phosphates such as sodium metaphosphate or long-chain polyphosphate salts.
  • the suspensions obtained are with an associative thickener and / or Dispersant added.
  • particles such as Li 2 O, MgO, CaO, SrO, BaO, B 2 O 3 , Al 2 O 3 , Sc 2 O 3 , Y 2 O 3 , La 2 O 3 , SiO 2 , GeO 2 , SnO 2 , TiO 2 , ZrO 2 , HfO 2 or MgAl 2 O 4 with a particle diameter smaller than 300 nm also suspended directly in aqueous solution and then mixed with an associative thickener and / or a dispersant.
  • the particles can be stirred by grinding with a ball mill with and without an agitator with a dissolver, shear dispersing with an Ultraturrax device, an ultrasonic bath or an ultrasonic sonotrode can be dispersed.
  • the suspensions can also be mixed with additives that improve the flow properties modify the suspensions and give them thixotropic properties.
  • additives can include small additions of organic, soluble polymers such as Polyvinyl alcohol, polyacrylate derivatives, associative thickeners or completely dispersed colloids can be used.
  • suspensions obtained in these different ways can be made in a wide variety of ways Processes such as spin coating, meniscus coating, blade coating, screen printing or Flexographic printing can be applied to the dielectric layer 4 of the front plate 1.
  • the layers are thermally treated again. By heating the Layers at 450 ° C can be removed without leaving any residues. In some cases it may be necessary to apply temperatures of 600 ° C to complete pyrolysis to achieve the polymers. In the event that the applied suspension is a precursor to one contains particles according to the invention, also takes place in the thermal treatment appropriate conversion instead.
  • a noble gas halide such as ArF, KrCl, KrF, XeBr, XeCl, XeF, a Ne / N 2 mixture or mercury vapor, for example, can be used as the gas for the plasma discharge.
  • phosphors are used which differ from wavelengths> Excite 172 nm, especially in a wavelength range between 200 and 350 nm to let.
  • BaMgAl 10 O 17 Eu
  • (Ba 1-x Sr x ) 5 (PO 4 ) 3 (F, Cl): Eu with 0 ⁇ x ⁇ 1 or (Ba 1-xy Sr x Ca y ) 5 (PO 4 ) 3 (F, Cl): Eu with 0 ⁇ x ⁇ 1 can be used.
  • Zn 2 SiO 4 Mn, BaAl 12 O 19 : Mn, Y 2 SiO 5 : Tb, CeMgAl 11 O 19 : Tb, (Y 1-x Gd x ) BO 3 : Tb with 0, for example, can be used as the green-emitting phosphor ⁇ x ⁇ 1, InBO 3 : Tb GdMgB 5 O 10 : Ce, Tb or LaPO 4 : Ce, Tb.
  • Y 2 O 3 Eu
  • Y 2 O 2 S Eu
  • YVO 4 Eu
  • Y (V 1-x P x ) O 4 Eu with 0 ⁇ x ⁇ 1
  • Known methods are used to produce a segmented phosphor layer 10 a phosphor preparation with a green, red or blue emitting phosphor manufactured and this by means of dry coating processes, for. B. electrostatic deposition or electrostatically assisted dusting, as well as by means of wet coating processes, z. B. screen printing, dispenser processes in which a phosphor preparation with a nozzle moving along the channels, or sedimentation the liquid phase, equipped with a rib structure 12 on a carrier plate 2 Separating ribs and address electrodes 10 applied. Then this procedure is for the other two colors performed.
  • the carrier plate 2 is together with other components such as one Front plate 1 and a gas used to produce a plasma screen.
  • the UV light reflecting layer 8 is preferred in the case of AC plasma picture screens where the plasma cells are controlled by AC voltage and where the Discharge electrodes 6, 7 are covered by a dielectric layer 4.
  • a layer reflecting UV light can also be used with DC plasma screens are used in which the discharge electrodes 6,7 are not of a dielectric Layer 4 are covered.
  • a screen printing paste 100 g of p- menth-1-en-8-ol, which contained 5% by weight of ethyl cellulose, 2.7 g of a thixotropic agent and 12 g of SiO 2 with a particle diameter between 20 and 110 nm were mixed and then by two passes dispersed in a three-roll mill.
  • a layer of SiO 2 particles was applied as a UV light reflecting layer 8 to the dielectric layer 4 of a front plate 1, which has a glass plate 3, a dielectric layer 4 and two discharge electrodes 6, 7.
  • the dielectric layer 4 contained PbO and the two discharge electrodes 6, 7 were made of ITO.
  • the front plate 1 was first dried and then subjected to a thermal aftertreatment at 450 ° C. for 2 hours.
  • the layer thickness of the UV-reflecting layer 8 made of SiO 2 was 4.0 ⁇ m.
  • the UV light reflecting layer 8 was evaporated with a layer of MgO, which had a layer thickness of 730 nm.
  • the finished front plate 1 was used together with a carrier plate 2 and a gas to build a plasma screen that had increased luminance.
  • the gas contained 90 vol% Ne and 10 vol% N 2 .
  • line 15 shows the reflection of the 4.0 ⁇ m SiO 2 -containing UV light-reflecting layer 8 as a function of the wavelength.
  • Line 16 shows the reflection after the 730 nm thick protective layer 5 made of MgO was evaporated onto the UV light reflecting 8.
  • a layer of Al 2 O 3 particles was applied as a UV light reflecting layer 8 to the dielectric layer 4 of a front plate 1, which has a glass plate 3, a dielectric layer 4 and two discharge electrodes 6, 7.
  • the dielectric layer 4 contained PbO and the two discharge electrodes 6, 7 were made of ITO.
  • the front plate 1 was first dried and then subjected to a thermal aftertreatment at 450 ° C. for 2 hours.
  • the layer thickness of the UV-reflecting layer 8 made of Al 2 O 3 was 2.0 ⁇ m.
  • the UV light reflecting layer 8 was vapor-deposited with a layer of MgO, which had a layer thickness of 600 nm.
  • the finished front plate 1 was used together with a carrier plate 2 and a gas to build a plasma screen that had increased luminance.
  • the gas contained KrF

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Luminescent Compositions (AREA)
EP02100135A 2001-02-15 2002-02-14 Ecran à plasma à luminance accrue Withdrawn EP1233438A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10106963 2001-02-15
DE10106963A DE10106963A1 (de) 2001-02-15 2001-02-15 Plasmabildschirm mit erhöhter Luminanz

Publications (1)

Publication Number Publication Date
EP1233438A2 true EP1233438A2 (fr) 2002-08-21

Family

ID=7674088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02100135A Withdrawn EP1233438A2 (fr) 2001-02-15 2002-02-14 Ecran à plasma à luminance accrue

Country Status (7)

Country Link
US (1) US20020113542A1 (fr)
EP (1) EP1233438A2 (fr)
JP (1) JP2002279907A (fr)
KR (1) KR20020067632A (fr)
CN (1) CN1371115A (fr)
DE (1) DE10106963A1 (fr)
TW (1) TW564463B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1310976A2 (fr) * 2001-11-09 2003-05-14 Hitachi, Ltd. Panneau d'affichage à plasma
CN106839124A (zh) * 2017-03-30 2017-06-13 谢红卫 单向等离子静电净化新风机及运行方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100338716C (zh) * 2002-12-28 2007-09-19 鸿富锦精密工业（深圳）有限公司 电浆显示器及其前基板的制造方法
JP4415578B2 (ja) * 2003-06-30 2010-02-17 パナソニック株式会社 プラズマディスプレイ装置
JP4244727B2 (ja) 2003-06-30 2009-03-25 パナソニック株式会社 プラズマディスプレイ装置
JP4244726B2 (ja) * 2003-06-30 2009-03-25 パナソニック株式会社 プラズマディスプレイ装置
KR101256387B1 (ko) * 2005-04-14 2013-04-25 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Ｕｖｃ 방사선을 발생시키는 장치
KR100755855B1 (ko) * 2006-01-11 2007-09-07 엘지전자 주식회사 플라즈마 디스플레이 패널 및 그 제조방법
JP2009224032A (ja) * 2008-03-13 2009-10-01 Hitachi Ltd 表示装置およびプラズマディスプレイパネル
WO2012041252A1 (fr) * 2010-09-30 2012-04-05 四川虹欧显示器件有限公司 Écran à plasma et procédé de préparation associé

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6100633A (en) * 1996-09-30 2000-08-08 Kabushiki Kaisha Toshiba Plasma display panel with phosphor microspheres
KR100247821B1 (ko) * 1997-08-30 2000-03-15 손욱 플라즈마표시장치
TW423006B (en) * 1998-03-31 2001-02-21 Toshiba Corp Discharge type flat display device
JP3657869B2 (ja) * 1999-10-29 2005-06-08 株式会社巴川製紙所 低反射部材
JP4248721B2 (ja) * 2000-02-22 2009-04-02 三菱電機株式会社 紫外線変換材料とこの紫外線変換材料を用いた表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1310976A2 (fr) * 2001-11-09 2003-05-14 Hitachi, Ltd. Panneau d'affichage à plasma
CN106839124A (zh) * 2017-03-30 2017-06-13 谢红卫 单向等离子静电净化新风机及运行方法

Also Published As

Publication number Publication date
TW564463B (en) 2003-12-01
DE10106963A1 (de) 2002-08-29
KR20020067632A (ko) 2002-08-23
CN1371115A (zh) 2002-09-25
US20020113542A1 (en) 2002-08-22
JP2002279907A (ja) 2002-09-27

Similar Documents

Publication Publication Date Title
EP1085554B1 (fr) Ecran à plasma avec plaque frontale munie d'un revêtement réfléchissant la lumière UV
DE69630004T2 (de) Plasmaanzeigetafel geeignet für Anzeige hoher Qualität
DE69837500T2 (de) Phosphormaterial und Plasma-Anzeigetafel
DE602004009645T2 (de) Leuchtstoff und Plasma-Anzeigevorrichtung
DE10009915A1 (de) Plasmabildschirm mit UV-Licht emittierender Schicht
DE19937420C1 (de) Plasmabildschirm mit Leuchtstoffzubereitung, Leuchtstoffzubereitung und Verfahren zu Herstellung einer Leuchtstoffzubereitung
EP1215698B1 (fr) Ecran à plasma avec une couche luminescente
EP1256616B1 (fr) Panneau de visualisation à plasma avec luminophore bleu
EP1253624B1 (fr) Lampe à décharge avec matière luminescente
EP1233438A2 (fr) Ecran à plasma à luminance accrue
DE19962029A1 (de) Plasmabildschirm mit rotem Leuchtstoff
EP1130621A2 (fr) Panneau de visualisation à plasma avec luminophore bleu
EP1253625B1 (fr) Lampe à décharge avec matière luminescente
EP1254943B1 (fr) Luminophore, et lampe à décharge avec ce luminophore
DE102004054091B4 (de) Durch Vakuum-ultraviolett angeregtes grünes Phosphormaterial und eine dieses Material verwendende Vorrichtung
DE19952242A1 (de) Plasmabildschirm mit rotem Leuchtstoff
DE10104364A1 (de) Plasmabildschirm mit einer Leuchtstoffschicht
DE60204724T2 (de) Plasmabildschirm mit grünem phosphor
DE60305253T2 (de) Leuchtstoff für Licht emittierendes Element angeregt durch Vakuum UV-Licht
EP2351065B1 (fr) Lampe à décharge basse pression
EP1258902A2 (fr) Panneau d'affichage à plasma ayant un point de couleur blanche amélioré
DE2607888A1 (de) Leuchtstoff
DE10215891A1 (de) Plasmabildschirm mit erhöhter Effizienz

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: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20040315