EP0250821A2 - Dispositif de visualisation plat - Google Patents

Dispositif de visualisation plat Download PDF

Info

Publication number
EP0250821A2
EP0250821A2 EP87107106A EP87107106A EP0250821A2 EP 0250821 A2 EP0250821 A2 EP 0250821A2 EP 87107106 A EP87107106 A EP 87107106A EP 87107106 A EP87107106 A EP 87107106A EP 0250821 A2 EP0250821 A2 EP 0250821A2
Authority
EP
European Patent Office
Prior art keywords
heating wires
heating
line
counter electrode
display device
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
EP87107106A
Other languages
German (de)
English (en)
Other versions
EP0250821B1 (fr
EP0250821A3 (en
Inventor
Kurt-Manfred Tischer
Uwe Mayer
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.)
Panasonic Holdings Corp
Original Assignee
Nokia Unterhaltungselektronik Deutschland GmbH
Standard Elektrik Lorenz AG
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 Nokia Unterhaltungselektronik Deutschland GmbH, Standard Elektrik Lorenz AG filed Critical Nokia Unterhaltungselektronik Deutschland GmbH
Publication of EP0250821A2 publication Critical patent/EP0250821A2/fr
Publication of EP0250821A3 publication Critical patent/EP0250821A3/de
Application granted granted Critical
Publication of EP0250821B1 publication Critical patent/EP0250821B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/123—Flat display tubes
    • H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
    • H01J31/126—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using line sources

Definitions

  • the invention relates to a flat image display device according to the preamble of claim 1 and to a method for its operation.
  • Such a flat picture display device is known from the publication "The flat television screen” in the Funkschau 1980, issue 10, pp. 63 to 66, picture 2.
  • This has a fluorescent-coated glass front panel on the inside and a high positive potential, a digitally addressable multi-layer control arrangement for shaping and modulating the electron current, a planar cathode sending a uniform electron current in the direction of the control arrangement and a rear metal encapsulation around the entire Complete arrangement under vacuum.
  • the cathode is constructed from a periodic arrangement of heating wires coated with oxide, in the vicinity of which one field-forming counter electrode is arranged. In a plane between this counter electrode and the heating wires there is a periodic arrangement of elongated field shaping electrodes which run parallel to the heating filaments.
  • This areal cathode requires a high heating output, since the cathode has to provide the maximum current density for the peak brightness at all times, although in most cases only a fraction of this is required.
  • This static mode of operation damages the heating wires coated with oxide and moreover does not allow a long service life to be expected.
  • the power requirement is increased by the complex control arrangement, which has only a low permeability for the electrons.
  • the invention has for its object to provide a flat cathode for a flat image display device, which requires less power, produces a uniform and high brightness of the phosphor layer and allows a simple control arrangement. Furthermore, a method for operating the image display device is to be specified.
  • the first object is achieved with the means specified in claim 1.
  • Advantageous refinements are contained in subclaims 2 and 3.
  • the second object is achieved with the means specified in claim 4.
  • Advantageous refinements are contained in subclaims 5 to 12.
  • Fig. 1 the flat image display device is shown in a section.
  • the glass front plate 1 forms with the tub 2 arranged on its rear side a closed housing which is evacuated.
  • a coating of phosphor 3 is present on the inside of the front panel, the individual pixels not being shown.
  • a control arrangement 4 is provided, which will not be discussed in detail here.
  • a perforated anode 5 which pulls the electrons emitted by the flat cathode in the direction of the coating made of phosphor 3.
  • a segmented Counter electrode 6 applied applied applied.
  • the flat cathode consisting of a periodic arrangement of heating wires 7 coated with oxide.
  • the heating wires 7 are held by springs 8 which are attached to an insulating attachment 9.
  • the heating wires 7 are all in one plane parallel to the plane of the counter electrode 6 and they extend parallel to the lines to be displayed on the front panel.
  • the segments of the counter electrode 6 run perpendicular to the longitudinal extent of the heating wires 7.
  • the distance of the heating wires 7 from the anode 5 is approximately one to ten times as large as their distance from the counter electrode 6.
  • heating wires 7 run perpendicular to the plane of the drawing and electron paths are shown for the two heating wires 7 Elektronen and 7 ⁇ .
  • FIGS. 1 and 2 can be used to simulate an areal cathode for a flat image display device.
  • the segmented counter electrode 6 is at a potential of approximately 5 volts and the anode 5 is at a potential of 10 to 20 volts.
  • the heating wires 7 are at a positive potential, which prevents the flow of electrons to the anode.
  • a current flows through the heating wires 7, which brings them to a temperature of approximately 650 ° C. At this temperature, the oxide emits electrons on the heating wires.
  • the heating wires are now switched off from the heating voltage and placed at a potential of 0 volt, the positive potentials act on the counterelectrode 6 and on the anode 5 and move the emitted electrons onto the schematically in Fig. 2 for the heating wires 7 ⁇ and 7 ⁇ drawn tracks. A certain proportion of the electrons flow out through the counterelectrode, but this has no harmful influence.
  • the electrons pass through the holes in the anode 5 and pass through the control arrangement 4 to the coating made of phosphor 3, which is at a high positive potential. In FIG. 2, after the control arrangement 4, electrons are only present in the area which was not blocked by them and which corresponds to a line to be displayed.
  • FIG. 3 schematically shows a part of the flat cathode, the anode 5 and the counter electrode 6 in a section perpendicular to the heating wires 7.
  • the heating wires 7 with the designation n to n + 3 and n + 6 are connected to a heating voltage source U H , so that a current flows through them and heats them up.
  • the emitted electrons are not sucked off either by the anode 5 or by the counterelectrode 6 at the indicated potentials, since these heating wires are additionally at a positive potential, which provides a voltage source U (see FIG. 4).
  • the heating wires 7 with the designations n + 4 and n + 5 are not energized and are at a potential of 0 volts.
  • the anode 5 and the counterelectrode 6 attract electrons, the paths of which run within the lines L4 and L5.
  • the anode 5 receives electrons in an area A45, which has an increased electron density in its central partial area A45 ⁇ . Electrons are removed line by line from the control arrangement 4, not shown, from this subarea A45 ⁇ . If the right edge of the partial area A45 ⁇ in FIG. 3 is reached, then the heating wire with the designation n + 4 is switched on again to the heating voltage source to energize it and the electron current to the anode is prevented.
  • the heating wire with the designation n + 6 is now connected to the potential of 0 volts.
  • electrons are attracted by this heating wire to the anode and the counterelectrode, the paths of which run within the line L6.
  • the electron-receiving region on the anode 5 shifts to the right in FIG. 3 and is designated A56.
  • the control arrangement From its central sub-area A56 ⁇ , the control arrangement now selects the electrons for the lines to be displayed. In this way, the current draw from the flat cathode is cyclically switched on until the last heating wires belonging to the corresponding image edge are reached. Then the same process starts again with the first heating wires.
  • FIG. 4 shows a circuit arrangement with which the process described above can be carried out.
  • the - in Fig. 4 - left ends of the heating wires are each connected via a switch S Hn to S Hn + 6 to the positive pole of the heating voltage source U H , which emits a voltage of 15 volts, for example.
  • the heating voltage source U H is connected with its negative pole to the positive pole of the voltage source U, the negative pole of which is at zero potential.
  • the voltage source U outputs, for example, a voltage of 5 volts.
  • the right ends of the heating wires are each connected to a switch S An to S An + 6 , which in its one position connects to the negative pole of the heating voltage source U H and to the positive pole of the voltage source U and in its other position a connection to the zero potential manufactures.
  • the switches S Hn to S Hn + 3 and S Hn + 6 are closed and the switches S An to S An + 3 and S An + 6 in the position in which they are Establish connection to heating voltage source U H.
  • the switches S Hn + 4 and S Hn + 5 are open and the switches S An + 4 and S An + 5 in the position in which they connect the heating wires with the designation n + 4 and n + 5 to the zero potential.
  • the switch S Hn + 4 is closed, the switch S Hn + 6 is opened and the changeover switches S An + 4 and S An + 6 are brought into their respective other positions.
  • the heating wires 7 are designated n to n + 6. It is assumed that the heating wires labeled n + 2, n + 3 and n + 4 send 24 electrons to the perforated anode 5 in one area. This area 24 are assigned to the lines 1 to m to be displayed, the corresponding currents of which are designated J1 to J m . It then results in line 1 of the current J 1, in line ml the current J ml and in line m the current J m , where l is an integer.
  • the distance between the heating wires 7 and the anode 5 is in the range of a few millimeters, then it is possible that the current J ml is different from the stron J 1, since the line 1 has a different position with respect to the heating wires than the line ml. This has to Consequence that the brightness of the two lines is also different.
  • the line current to be measured is plotted in FIG. 6 as a function of the line position in a diagram for this example.
  • the drawn current value represents the target average of the current that should be reached in each line.
  • the different currents in the individual lines occur when a constant voltage U G (O) is present at the counter electrode 6.
  • U G (O) a constant voltage
  • Fig. 7 this value is shown in dashed lines in a diagram of the voltage U G over the line position.
  • the different brightness in the individual lines can be compensated for by replacing the constant voltage U G (0) set without a corrective measure by a variable line voltage U G which is adapted line by line.
  • the corresponding voltage values U G (1), U G (ml) and U G (m) for lines 1, ml and m are entered in FIG. 7.
  • This voltage curve makes it possible to use the undesired current distribution shown in FIG. 6 to produce the current value that is constant for all lines adjust.
  • a white image is written line by line.
  • the associated voltage U G at the counter electrode is determined within each line and stored in a memory 11.
  • this memory 11 becomes the each line read the corresponding voltage value.
  • the associated voltage value U G is selected for each line from the memory 11 and processed in the mixer 12 together with the video signal to form a control signal U G ⁇ .
  • an addition is carried out in the mixer 12.
  • further corrections can also be achieved with this method.
  • the memory not only contains values for the different lines, but also takes into account the dependence on the pixel position. This enables a special setting for each pixel and its current dependency.
  • a microprocessor can perform this task, for example.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
EP87107106A 1986-07-02 1987-05-16 Dispositif de visualisation plat Expired - Lifetime EP0250821B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622259 1986-07-02
DE19863622259 DE3622259A1 (de) 1986-07-02 1986-07-02 Flache bildwiedergabevorrichtung

Publications (3)

Publication Number Publication Date
EP0250821A2 true EP0250821A2 (fr) 1988-01-07
EP0250821A3 EP0250821A3 (en) 1989-01-25
EP0250821B1 EP0250821B1 (fr) 1991-12-18

Family

ID=6304256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107106A Expired - Lifetime EP0250821B1 (fr) 1986-07-02 1987-05-16 Dispositif de visualisation plat

Country Status (6)

Country Link
US (1) US4896080A (fr)
EP (1) EP0250821B1 (fr)
JP (1) JP2559117B2 (fr)
AU (1) AU595043B2 (fr)
CA (1) CA1286709C (fr)
DE (2) DE3622259A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391139A2 (fr) * 1989-04-07 1990-10-10 Nokia (Deutschland) GmbH Dispositif de visualisation plat
EP0391140A2 (fr) * 1989-04-07 1990-10-10 Nokia (Deutschland) GmbH Dispositif de visualisation plat
US5256937A (en) * 1989-04-07 1993-10-26 Nokia (Deutschland) Gmbh Flat panel fluorescent screen display tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911346A1 (de) * 1989-04-07 1990-10-11 Nokia Unterhaltungselektronik Steuersystem fuer flache bildwiedergabevorrichtungen
JP3060655B2 (ja) * 1991-10-28 2000-07-10 三菱電機株式会社 平面型表示装置
JP3424358B2 (ja) * 1994-12-06 2003-07-07 三菱電機株式会社 平板型画像表示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451846A (en) * 1981-02-10 1984-05-29 Matsushita Electric Industrial Co., Ltd. Color image display apparatus
JPS59146138A (ja) * 1983-02-10 1984-08-21 Matsushita Electric Ind Co Ltd 電子源の駆動方法
US4525653A (en) * 1982-09-17 1985-06-25 U.S. Philips Corporation Modular display apparatus with means for preventing brightness variations
JPS60185343A (ja) * 1984-03-02 1985-09-20 Matsushita Electric Ind Co Ltd 平板型表示装置
JPS6154139A (ja) * 1984-08-22 1986-03-18 Matsushita Electric Ind Co Ltd 表示装置の電子源
EP0226817A2 (fr) * 1985-11-21 1987-07-01 Nokia Unterhaltungselektronik (Deutschland) GmbH Tube-image plat

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227117A (en) * 1978-04-28 1980-10-07 Matsuhita Electric Industrial Co., Ltd. Picture display device
JPS56147346A (en) * 1980-04-17 1981-11-16 Matsushita Electric Ind Co Ltd Electron source
JPS57174840A (en) * 1981-04-17 1982-10-27 Matsushita Electric Ind Co Ltd Picture image display device
US4535272A (en) * 1981-11-16 1985-08-13 Matsushita Electric Industrial Co., Ltd. Image display apparatus
JPS59112551A (ja) * 1982-12-20 1984-06-29 Matsushita Electric Ind Co Ltd 平板型画像表示装置の駆動方法
JPS59146142A (ja) * 1983-02-10 1984-08-21 Matsushita Electric Ind Co Ltd 平板型画像表示装置
JPH0630230B2 (ja) * 1983-10-27 1994-04-20 松下電器産業株式会社 画像表示装置
FR2561019B1 (fr) * 1984-03-09 1987-07-17 Etude Surfaces Lab Procede de realisation d'ecrans de visualisation plats et ecrans plats obtenus par la mise en oeuvre dudit procede
US4736139A (en) * 1984-11-19 1988-04-05 Matsushita Electric Industrial Co., Ltd. Flat type cathode ray tube and color image display apparatus utilizing same
DE3529041A1 (de) * 1985-08-13 1987-02-19 Siemens Ag Flache, hochaufloesende bildanzeigevorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451846A (en) * 1981-02-10 1984-05-29 Matsushita Electric Industrial Co., Ltd. Color image display apparatus
US4525653A (en) * 1982-09-17 1985-06-25 U.S. Philips Corporation Modular display apparatus with means for preventing brightness variations
JPS59146138A (ja) * 1983-02-10 1984-08-21 Matsushita Electric Ind Co Ltd 電子源の駆動方法
JPS60185343A (ja) * 1984-03-02 1985-09-20 Matsushita Electric Ind Co Ltd 平板型表示装置
JPS6154139A (ja) * 1984-08-22 1986-03-18 Matsushita Electric Ind Co Ltd 表示装置の電子源
EP0226817A2 (fr) * 1985-11-21 1987-07-01 Nokia Unterhaltungselektronik (Deutschland) GmbH Tube-image plat

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 217 (E-423)[2273], 29. Juli 1986; & JP-A-61 054 139 (MATSUSHITA ELECTRIC IND. CO. LTD) (Kat. A) 18-03-1986 *
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 24 (E-377)[2081], 30. Januar 1986; & JP-A-60 185 343 (MATSUSHITA DENKI SANGYO K.K.) 20-09-1985 *
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 277 (E-285)[1714], 18. Dezember 1984; & JP-A-59 146 138 (MATSUSHITA DENKI SANGYO K.K.) 21-08-1984 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391139A2 (fr) * 1989-04-07 1990-10-10 Nokia (Deutschland) GmbH Dispositif de visualisation plat
EP0391140A2 (fr) * 1989-04-07 1990-10-10 Nokia (Deutschland) GmbH Dispositif de visualisation plat
DE3911351A1 (de) * 1989-04-07 1990-10-11 Nokia Unterhaltungselektronik Flache anzeigeeinrichtung
EP0391140A3 (fr) * 1989-04-07 1991-08-07 Nokia (Deutschland) GmbH Dispositif de visualisation plat
EP0391139A3 (fr) * 1989-04-07 1991-09-18 Nokia (Deutschland) GmbH Dispositif de visualisation plat
US5256937A (en) * 1989-04-07 1993-10-26 Nokia (Deutschland) Gmbh Flat panel fluorescent screen display tube

Also Published As

Publication number Publication date
JPS6313246A (ja) 1988-01-20
DE3775286D1 (de) 1992-01-30
EP0250821B1 (fr) 1991-12-18
DE3622259A1 (de) 1988-01-07
JP2559117B2 (ja) 1996-12-04
AU7457087A (en) 1988-01-07
CA1286709C (fr) 1991-07-23
AU595043B2 (en) 1990-03-22
EP0250821A3 (en) 1989-01-25
US4896080A (en) 1990-01-23

Similar Documents

Publication Publication Date Title
DE2412869A1 (de) Entladungs-lumineszenz-anzeigeeinrichtung
DE1126444B (de) Kathodenstrahlroehre
DE1943140B2 (de) Verfahren zum analysieren des oberflaechenpotentials eines prueflings
DE3203768C2 (de) Anzeigervorrichtung in flacher Bauform
DE2724122A1 (de) Elektronenwiedergabeeinrichtung
EP0061525B1 (fr) Tube de reproduction d'image plat
EP0250821B1 (fr) Dispositif de visualisation plat
DE2525607A1 (de) Konvergenzeinrichtung fuer eine mehrstrahl-kathodenstrahlroehre
DE755240C (de) Anordnung fuer den Empfang von Fernsehsendungen mit einer Braunschen Roehre
DE2948955A1 (de) Anordnung zur korrektur der zeilenablenkfrequenz in einer strahlindex-farbkathodenstrahlroehre
DE3035241A1 (de) Farbbildwiedergaberoehre und vorrichtung mit einer derartigen roehre
DE4401172C2 (de) Fluoreszenzanzeigevorrichtung
DE3136080C2 (fr)
DE69636587T2 (de) Verfahren zum Steuern eines flach-ebenen Anzeige-bzw. Wiedergabe-Bildschirms
DE948616C (de) Elektronenstrahlroehre zur Wiedergabe farbiger Fernsehbilder
DE3541164A1 (de) Flache bildwiedergabevorrichtung
DD218726A5 (de) Farbwiedergabegeraet
DE3018453C2 (de) Verfahren zur Farbfernseh-Bilddarstellung und Farbbildröhre hierzu
EP0286911A1 (fr) Dispositif à reproduction d'images plates
DE1090711B (de) Verfahren zur Wiedergabe eines Farbfernsehbildes
DE1015845B (de) Vorrichtung zur Wiedergabe von Farbfernsehbildern
EP0034302A2 (fr) Tube-image couleur sans masque d'ombre et comportant un seul canon à électrons
DE1900043A1 (de) Kathodenstrahl-Anzeigeroehre
DE2234998A1 (de) Mit einem ladungstraegerstrahl arbeitender abtaster
AT142846B (de) Vorrichtung zum Beeinflussen eines Lichtbündels auf elektrischem Wege.

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): DE FR GB IT NL

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

Owner name: NOKIA GRAETZ GESELLSCHAFT MIT BESCHRAENKTER HAFTUN

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19890220

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

Owner name: NOKIA UNTERHALTUNGSELEKTRONIK (DEUTSCHLAND) GMBH

17Q First examination report despatched

Effective date: 19910116

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3775286

Country of ref document: DE

Date of ref document: 19920130

ET Fr: translation filed
ITPR It: changes in ownership of a european patent

Owner name: CAMBIO RAGIONE SOCIALE;NOKIA (DEUTSCHLAND) GMBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: NOKIA (DEUTSCHLAND) GMBH TE PFORZHEIM, BONDSREPUBL

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

NLS Nl: assignments of ep-patents

Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030627

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20040505

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040510

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040512

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050516

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050516

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050516

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20051201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060131