EP0453979B1 - Grille pour système de canons électroniques - Google Patents

Grille pour système de canons électroniques Download PDF

Info

Publication number
EP0453979B1
EP0453979B1 EP91106299A EP91106299A EP0453979B1 EP 0453979 B1 EP0453979 B1 EP 0453979B1 EP 91106299 A EP91106299 A EP 91106299A EP 91106299 A EP91106299 A EP 91106299A EP 0453979 B1 EP0453979 B1 EP 0453979B1
Authority
EP
European Patent Office
Prior art keywords
grid
openings
tubes
opening
diameter
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.)
Expired - Lifetime
Application number
EP91106299A
Other languages
German (de)
English (en)
Other versions
EP0453979A2 (fr
EP0453979A3 (en
Inventor
Manfred Marggraf
Kurt-Manfred Tischer
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 Deutschland GmbH
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 Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0453979A2 publication Critical patent/EP0453979A2/fr
Publication of EP0453979A3 publication Critical patent/EP0453979A3/de
Application granted granted Critical
Publication of EP0453979B1 publication Critical patent/EP0453979B1/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
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
    • 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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes

Definitions

  • the invention relates to grids of electron beam generation systems, such as those used in picture tubes of television sets.
  • Such grids which together with other components form the electron beam generation system of picture tubes in a defined number, have in common that they are shaped sheet metal stampings and that they have an opening for each electron beam source - the so-called cathode - through which those emitted by the cathode Electrons can pass through.
  • the size, shape and spacing of the openings from one another - the so-called s-spacing - can be chosen differently from grid to grid.
  • the openings of the grids are conventionally produced using stamping technology. Since the dimensional accuracy of the openings generally, but especially in the area in which the electrons enter the lattice, In addition to other criteria, which determine the sharpness of the future electron beam generation system, precision punching machines are used to manufacture the grids. In addition, since grids are manufactured in large numbers and accordingly the punching tools are subject to great wear and tear, conventional punching technology is an extremely expensive process for producing grids.
  • lattice openings are also known (DE-A-2412541), the lattice opening cross-section of which have so-called lugs (also called passages) which are formed when the openings are punched and which have the opening cross-section tubular over the thickness of the lattice bottom extend out towards the axis of the electron beams. It is known from such grid openings that it is very difficult to make the height of the lugs uniformly large. For this reason, a so-called auxiliary electrode is proposed in DE-A-2412541, which is essentially tubular.
  • auxiliary electrode is arranged at each grid opening in such a way that it overlaps the respective attachment and is aligned coaxially with it.
  • Such auxiliary electrodes significantly increase the manufacturing outlay, since on the one hand they require an auxiliary electrode and, on the other hand, the opening cross section of the grid openings or projections must be formed with the same precision as without using the auxiliary electrodes.
  • DE-A-2538436 discloses a Wehnelt electrode in which an insert is inserted into the opening in the electrode base. This insert, which has the electrode passage opening, is thinner than the bottom of the electrode itself. Since this insert also runs in the plane of the bottom, this measure improves the resolving power of the tube.
  • the invention has for its object to provide a grid that easily meets the highest dimensional accuracy requirements.
  • tubes are particularly advantageous because such tubes can be produced particularly inexpensively and with extremely high dimensional accuracy in the areas in which the electrons enter the tube inserted into the opening.
  • the length (L) of the tube exceeds the thickness of the grid in the region of the opening, it is ensured that the electrons are guided particularly well on their way through the tube.
  • Such tubes can also be used to produce the approaches known from DE-A-2412521.
  • the tubes can be easily pushed into the grids and, moreover, very easily aligned with one another.
  • the tubes are designed as hollow rivets, the respective collars of which have a head diameter which is larger than the opening diameter, and if their transitions are rounded off from the tubular shaft and collar as well as the top of the head facing away from the bottom of the grid, the electron beam guidance is further improved.
  • connection of pipe and grid is particularly simple if the collar of the hollow rivet is used.
  • the pipes or hollow rivets are welded to the grids using laser technology, the extraordinarily good dimensional stability of the pipes or hollow rivets is not impaired.
  • the grid constructed according to the invention not only meets the highest dimensional accuracy requirements, but also, due to the possibility of aligning the pipe or hollow rivets in the openings of the grid, changes in the s-spacing can be adapted without great effort if the openings according to claim 3 are formed.
  • FIG. 1 shows a grid 10 of an electron beam generation system using in-line technology.
  • the elongated sheet metal stamping body 11 of the grating 10 which takes up a hat shape in plan view, has three circular openings 13.1, 13.2, 13.3 with a diameter D ö on its base 12. Hollow rivets 14.2, 14.3 are inserted into two of these openings 13.2, 13.3. The outer diameters D E of the shafts of the hollow rivets 14.1, 14.2, 14.3 just undercut the diameters D ⁇ of the openings 13.2, 13.3. While the hollow rivet 14.2 is still unsecured in the opening 13.2 of the sheet metal stamping body 11, the hollow rivet 14.3 is already connected to the bottom 12 of the sheet metal stamping body 11 via the laser welding points 15.
  • FIG. 2 shows a hollow rivet 14.1 in detail.
  • An outwardly curved collar 17 is arranged on the shaft 16, which has an overall length L that exceeds the thickness D of the stamped sheet metal body 11 in the region of the base 12. In the installed state of the hollow rivets 14.1, this collar 17 covers the diameter D O of the opening 13.1 in the base 12. The transition from the collar 17 to the shaft 16 as well as the collar top 18 are rounded.
  • the openings 13.1, 13.2, 13.3 in the base 12 of the sheet metal punching body 11 can also be oval and the overall length L of the Shank 16 can correspond to the thickness D of the stamped sheet metal body 11 in the region of the openings 13.1, 13.2, 13.3.
  • the connection between the hollow rivet 14.1, 14.2, 14.3 and the base 12 of the sheet metal stamping body 11 can also take place on the side of the base 12 which faces away from the collar 17 of the hollow rivet 14.1, 14.2, 14.3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insertion Pins And Rivets (AREA)
  • Laser Beam Processing (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Claims (6)

  1. Grille pour un système de génération de faisceaux électroniques d'un tube image, laquelle grille est formée d'une pièce de tôle découpée et formée,
    caractérisée par le fait
    que des tubes (14.1 - 14.3) sont introduits dans les ouvertures (13.1 - 13.3) de la grille (10) et sont reliés à la grille.
  2. Grille selon la revendication 1,
    caractérisée par le fait
    que la longueur (L) du tube (14.1. - 14.3) est supérieure ou égale à l'épaisseur (D) de la grille (10) dans la région des ouvertures (13.1 - 13.3).
  3. Grille selon la revendication 1,
    caractérisée par le fait
    que le diamètre (DÖ) de l'ouverture (13.1 - 13.3) de la grille (10) est supérieur au diamètre extérieur (DE) du tube (14.1 - 14.3).
  4. Grille selon l'une des revendications 1 à 3,
    caractérisée par le fait
    que les tubes (14.1 - 14.3) sont réalisés sous forme de rivets tubulaires dont le collet (17) respectif présente un diamètre de tête qui est supérieur au diamètre (DÖ) de l'ouverture.
  5. Grille selon la revendication 4,
    caractérisée par le fait
    que le collet (17) est relié au fond (12) de la grille (10).
  6. Grille selon la revendication 1,
    caractérisée par le fait
    que les tubes (14.1 - 14.3) sont reliés à la grille (10) par soudage au laser.
EP91106299A 1990-04-23 1991-04-19 Grille pour système de canons électroniques Expired - Lifetime EP0453979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012888 1990-04-23
DE4012888A DE4012888A1 (de) 1990-04-23 1990-04-23 Gitter fuer elektronenstrahl-erzeugungssysteme

Publications (3)

Publication Number Publication Date
EP0453979A2 EP0453979A2 (fr) 1991-10-30
EP0453979A3 EP0453979A3 (en) 1993-01-20
EP0453979B1 true EP0453979B1 (fr) 1995-06-28

Family

ID=6404899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106299A Expired - Lifetime EP0453979B1 (fr) 1990-04-23 1991-04-19 Grille pour système de canons électroniques

Country Status (3)

Country Link
EP (1) EP0453979B1 (fr)
JP (1) JP3159460B2 (fr)
DE (2) DE4012888A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538436A1 (de) * 1975-08-29 1977-03-10 Licentia Gmbh Elektronenstrahlerzeugungssystem
EP0231964A1 (fr) * 1986-01-21 1987-08-12 Koninklijke Philips Electronics N.V. Tube image couleur muni de moyens réduisant la défocalisation due à la déflexion

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5433708B2 (fr) * 1973-08-08 1979-10-22
JPS5067549A (fr) * 1973-10-15 1975-06-06
US4101801A (en) * 1977-04-28 1978-07-18 Gte Sylvania Incorporated Shielded cathode support structure
DE2755654A1 (de) * 1977-12-14 1979-06-21 Licentia Gmbh Verfahren zum herstellen einer lochblendenelektrode
JPS5732536A (en) * 1980-08-01 1982-02-22 Hitachi Ltd Working method for electrode section of electron gun
IT1170150B (it) * 1982-07-19 1987-06-03 Rca Corp Griglia dotata di aperture per cannoni elettronici e metodo di fabbricazione della stessa
US4772826A (en) * 1986-06-26 1988-09-20 Rca Licensing Corporation Color display system
US4745331A (en) * 1987-07-20 1988-05-17 Rca Licensing Corporation Color picture tube having an inline electron gun with an einzel lens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538436A1 (de) * 1975-08-29 1977-03-10 Licentia Gmbh Elektronenstrahlerzeugungssystem
EP0231964A1 (fr) * 1986-01-21 1987-08-12 Koninklijke Philips Electronics N.V. Tube image couleur muni de moyens réduisant la défocalisation due à la déflexion

Also Published As

Publication number Publication date
DE59105827D1 (de) 1995-08-03
JPH0729508A (ja) 1995-01-31
EP0453979A2 (fr) 1991-10-30
DE4012888A1 (de) 1991-10-24
JP3159460B2 (ja) 2001-04-23
EP0453979A3 (en) 1993-01-20

Similar Documents

Publication Publication Date Title
EP0048003A1 (fr) Raccord de tuyaux non démontable
DE2345954C2 (de) Kernreaktor-Brennelement
DE1944932A1 (de) Brennstoffelement-Halterung fuer Kernreaktoren
DE2241407B2 (de) Verfahren zur Herstellung eines Wärmetauscherelements
DE3784564T2 (de) Eisenkern fuer elektromagnet und verfahren zur herstellung.
DE2807978C2 (de) Ablenkjoch für eine Kathodenstrahlröhre
DE3014428A1 (de) Gitterrahmen zur elektronenstrahllenkung in einer farbkathodenstrahlroehre
EP1306640A2 (fr) Plaque tubulaire d'échangeur de chaleur pour gaz d'échappement
DE4009780A1 (de) Waermetauscher
EP0453979B1 (fr) Grille pour système de canons électroniques
DE2220657A1 (de) Anordnung zum befestigen zweier bauteile
EP0027203A1 (fr) Grille d'espacement pour éléments combustibles de réacteurs nucléaires refroidis par de l'eau
DE60221119T2 (de) Verfahren zur herstellung eines hohlträgers und hohlträger
DE2745183C2 (fr)
EP0753363A1 (fr) Procédé pour la fabrication des corps creux
WO2003056197A1 (fr) Flasque pour moteur electrique, et moteur electrique correspondant
DE2537979C3 (de) Gitter für die Fokussierlinsen von Dreistrahlerzeugersystemen
DE102014107965A1 (de) Wandabschnitt
AT1336U1 (de) Verbindungskonstruktion
DE4339950C2 (de) Vorrichtung zum Zusammenbau von Elektronenstrahlerzeugern
DE2725081C3 (de) Heizungsradiator mit wenigstens einem aus zwei verformten Metallblechen bestehenden Einzelglied
WO2017198855A1 (fr) Montant d'échafaudage et procédé de fabrication d'un montant d'échafaudage
DE3214088A1 (de) Glasaussenrohr fuer sonnenwaermekollektorrohre
EP0453978B1 (fr) Système de canons électroniques
AT398350B (de) Flachheizkörper und verfahren zu seiner herstellung

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 IT NL

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

Owner name: NOKIA (DEUTSCHLAND) GMBH

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 IT NL

17P Request for examination filed

Effective date: 19930211

17Q First examination report despatched

Effective date: 19940524

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT NL

ITF It: translation for a ep patent filed

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

REF Corresponds to:

Ref document number: 59105827

Country of ref document: DE

Date of ref document: 19950803

ET Fr: translation filed
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
REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLS Nl: assignments of ep-patents

Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

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: NL

Payment date: 20040406

Year of fee payment: 14

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

Ref country code: FR

Payment date: 20040408

Year of fee payment: 14

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

Ref country code: DE

Payment date: 20040528

Year of fee payment: 14

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: 20050419

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: 20051101

Ref country code: DE

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

Effective date: 20051101

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: 20051230

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

Effective date: 20051101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20051230