EP0146839B1 - Farbbildröhre und Verfahren zu deren Herstellung und Justierung - Google Patents

Farbbildröhre und Verfahren zu deren Herstellung und Justierung Download PDF

Info

Publication number
EP0146839B1
EP0146839B1 EP84114760A EP84114760A EP0146839B1 EP 0146839 B1 EP0146839 B1 EP 0146839B1 EP 84114760 A EP84114760 A EP 84114760A EP 84114760 A EP84114760 A EP 84114760A EP 0146839 B1 EP0146839 B1 EP 0146839B1
Authority
EP
European Patent Office
Prior art keywords
deflection unit
electron beams
picture tube
raster
deflection
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
Application number
EP84114760A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0146839A1 (de
Inventor
Eberhard Nill
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.)
Nokia Deutschland GmbH
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel 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 Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV filed Critical Alcatel SEL AG
Publication of EP0146839A1 publication Critical patent/EP0146839A1/de
Application granted granted Critical
Publication of EP0146839B1 publication Critical patent/EP0146839B1/de
Expired legal-status Critical Current

Links

Images

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
    • H01J9/42—Measurement or testing during manufacture

Definitions

  • the invention relates to a color picture tube according to the preamble of the main claim and a method for attaching and adjusting a deflection unit to such a color picture tube.
  • a color picture tube which bears a large number of markings on the side of the shadow mask facing the beam generator system. These markings, which also have a strip of phosphorus running in the direction of image deflection, are all arranged in the perforated area of the shadow mask, so that they are struck by the electron beams during normal operation of the color picture tube.
  • the signals generated in this way are scanned through a window in the tube bulb and fed to a correction control system which carries out a convergence and / or geometry adjustment of the displayed image.
  • the invention has for its object to design a color picture tube so that an automatic adjustment of the deflection unit can take place and to specify a suitable method.
  • a color picture tube 19 like a conventional color picture tube, consists of a glass tube bulb 9, a screen 8, a shadow mask 7 of the slit or shadow mask type, a glass tube neck 25 and three jet generator systems 1, 2 mounted in the tube neck , 3.
  • an opaque inner coating 10 is attached on the inside of the tube bulb 9, an opaque inner coating 10 is attached.
  • a deflection unit 18 is attached to the outside of the color picture tube 19 at the transition from the tube neck 25 to the tube bulb 9. Electron beams 4, 5, 6 emanate from the beam generator systems 1, 2, 3, which are deflected in the region of the deflection unit 18 and which are intended to intersect in the holes in the shadow mask 7.
  • the color picture tube 19 also has at least one opening 11 in the inner coating 10.
  • the changes to the shadow mask 7 compared to a conventional one are further explained with reference to FIG. 2.
  • the rear view of the shadow mask 7 of the color picture tube 19 is shown.
  • the shadow mask 7 is attached to the front of a frame 16.
  • the edges of the shadow mask 7 are covered on the back by the frame 16.
  • There are markings 13a, 13b, 14a, 14b which run in the direction of the image deflection and which consist of a material which emits visible or UV light when an electron beam strikes it.
  • the markings preferably consist of phosphor strips.
  • the markings 13a, 13b, 14a are applied on the frame 16 and the marking 14b on a marking carrier 17 attached thereon. It is also possible to make markings directly on the shadow mask 7 in its edge region, which, however, must not be shadowed by the frame 16 for the electron beams 4, 5, 6.
  • the type and placement of markings should be selected so that a specific error to be corrected can be identified.
  • the openings 11 in the inner coating 10 of the tube bulb 9 and the associated photosensitive elements 12, on the other hand, are to be selected such that the largest possible part of the light emanating from the markings can be received from each photosensitive element 12 and that each of any part of one Mark outgoing flash of light from at least one photosensitive element 12 is receivable. Whether a photosensitive element 12 is permanently attached or whether such is only applied temporarily, for example by fitting a corresponding test head, depends primarily on whether one-off adjustment work or regular checks are carried out with the aid of the light received by this photosensitive element 12 should.
  • the markings 13a, 13b, 14a, 14b are applied to the frame 16 or the marking carrier 17 in such a way that they are struck by electron beams whose imaginary extensions extend the four centers of the edges of the image screen 8 meet. This makes it possible, in particular, to check the convergence at the four center sides.
  • a color picture tube is usually described with a grid that extends only a few percent on all sides beyond the edge of the screen and thus also beyond the perforated part of the shadow mask.
  • the markings 13 and 14 which serve to correct the convergence lie outside this range, since a larger grid is written during the adjustment of the color picture tube.
  • the correct fit of the deflection unit can be checked well. Not only can the deflection unit be adjusted very well, the adjustment process can also be largely automated.
  • the deflection unit 18 is usually attached and adjusted to the color picture tube 19 in such a way that the deflection unit 18 is first preassembled on the tube bulb 9 at the transition to the tube neck 25 and that the color picture tube 19 with the deflection unit 18 is then put into operation such that A grid is written to electron beams. Thereafter, the deflection unit 18 is first shifted on the tube neck 25 of the picture tube 19 such that the electron beams 4, 5, 6 of the three beam generator systems 1, 2, 3 converge in the center of the screen. The deflection unit 28 is then rotated about an axis running in the direction of the line deflection such that the electron beams 4, 5, 6 converge in the middle of the upper and lower raster edges.
  • the deflection unit 18 is then rotated about an axis running in the direction of the image deflection in such a way that the electron beams 4, 5, 6 converge in the middle of the right and left raster edges.
  • the convergence is usually determined by a test person by checking whether, in the presence of only a single electron beam, only the associated color is present everywhere. If necessary, the process is repeated.
  • the deflection unit 18 is then immovably connected to the color picture tube 19.
  • this method is modified in such a way that, at least during the setting of the convergence, the grid is written in such capital that the markings 13a, 13b, 14a, 14b are also overwritten by the grid.
  • the grid is not written by all jet generator systems 1, 2 and 3 at the same time, but only by one.
  • the times that the electron beams need to reach the respective marking 13a, 13b, 14a, 14b from the raster edge on the left when viewing the screen are then measured. An exact adjustment is achieved when all electron beams need the same length to reach a certain marking from the left raster edge. Depending on which electron beam arrives earlier and how big the time difference is, one has to change more or less in one or the other direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
EP84114760A 1983-12-22 1984-12-04 Farbbildröhre und Verfahren zu deren Herstellung und Justierung Expired EP0146839B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833346361 DE3346361A1 (de) 1983-12-22 1983-12-22 Farbbildroehre und verfahren zu deren herstellung und justierung
DE3346361 1983-12-22

Publications (2)

Publication Number Publication Date
EP0146839A1 EP0146839A1 (de) 1985-07-03
EP0146839B1 true EP0146839B1 (de) 1988-06-01

Family

ID=6217664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114760A Expired EP0146839B1 (de) 1983-12-22 1984-12-04 Farbbildröhre und Verfahren zu deren Herstellung und Justierung

Country Status (5)

Country Link
US (1) US4659957A (ja)
EP (1) EP0146839B1 (ja)
JP (1) JPS60157145A (ja)
CA (1) CA1220508A (ja)
DE (2) DE3346361A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2565881B2 (ja) * 1985-12-09 1996-12-18 株式会社東芝 カラ−受像管装置
US4748371A (en) * 1987-02-10 1988-05-31 Rca Licensing Corporation Cathode-ray tube shadow mask for low overscan

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7610353A (nl) * 1976-09-17 1978-03-21 Philips Nv Werkwijze voor het aanbrengen van referentiepunten voor de magnetische afbuigeenheid van een kleuren- beeldbuis, inrichting voor het uitvoeren van een dergelijke werkwijze en beeldbuis voorzien van refe- rentiepunten volgens de werkwijze of met de inrichting.
US4456853A (en) * 1981-07-06 1984-06-26 Tektronix, Inc. Feedback CRT for use in a closed-loop correction system

Also Published As

Publication number Publication date
JPS60157145A (ja) 1985-08-17
DE3471811D1 (en) 1988-07-07
CA1220508A (en) 1987-04-14
DE3346361A1 (de) 1985-07-04
US4659957A (en) 1987-04-21
EP0146839A1 (de) 1985-07-03

Similar Documents

Publication Publication Date Title
DE2342110C2 (de) Verfahren zur Herstellung eines Bildschirmes einer Farbbild-Kathodenstrahlröhre
DE2405610C2 (de) Farbauswahlelektrode für eine Kathodenstrahlröhre zur Wiedergabe farbiger Bilder
DE2339594C3 (de) Verfahren zur Herstellung eines Bildschirmes einer Farbbild-Kathodenstrahlröhre
DE2223015C2 (de) Photographisches Verfahren zum Herstellen einer Leuchtstoffstreifenanordnung
DE1762377B1 (de) Farbbild kathodenstrahlroehre mit mehreren elektronenstrahler erzeugern und verfahren zu deren herstellung
EP0146839B1 (de) Farbbildröhre und Verfahren zu deren Herstellung und Justierung
DE2646022A1 (de) Lichtstaerkeverteilungs-korrekturfilter sowie dessen herstellverfahren
DE2453007C3 (de) Farbauswahlelektrode mit Tragrahmen für mehrstrahlige Elektronenstrahl-Farbbildröhren
DE19757357A1 (de) Lochmaskenanordnung für eine Farbkathodenstrahlröhre
DE4240918A1 (ja)
EP0148415B1 (de) Farbbildröhre, Farbbildwiedergabegerät und Bildwiedergabeverfahren mit diesem Gerät
DE3047610C2 (de) Schlitzlochmaske für eine Farbbildröhre
DE4223927A1 (de) Farbbildroehre mit einer lochmaske mit verbesserter traversen-abstufung
DE2619871A1 (de) Kathodenstrahlroehre mit verbesserter schirmstruktur
EP0039832A1 (de) Farbfernseh-Bilddarstellung und Farbbildröhre
DE2141914C3 (de) Kathodenstrahl-Farbbildrohre
DE4023177C2 (de) Farbbildröhre mit Halterung für eine Schattenmasken-Rahmen-Anordnung
DE2732424C3 (de) Bildschirm einer Kathodenstrahl-Index-Farbbildröhre und Verfahren zu dessen Herstellung
DE102020126491B4 (de) Scheinwerfersystem für Fahrzeuge
DE2836554C2 (ja)
DE2936231A1 (de) Farbbildroehre mit verbesserter gewellter maske
DE2036451B2 (de) Kathodenstrahlröhre
DE2450734A1 (de) Farbbildkathodenstrahlroehre
DE4330655C2 (de) Kennzeichnungsmuster auf Bildröhren und Verfahren zu seiner Herstellung
DE2225500A1 (de) Lochmasken-Farbbildröhre

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

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19851219

17Q First examination report despatched

Effective date: 19860613

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

Owner name: STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT

Owner name: ALCATEL N.V.

ITF It: translation for a ep patent filed

Owner name: DOTT. ANTONIO SERGI

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT

Owner name: ALCATEL N.V.

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

REF Corresponds to:

Ref document number: 3471811

Country of ref document: DE

Date of ref document: 19880707

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
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: 732

NLS Nl: assignments of ep-patents

Owner name: NOKIA GRAETZ GMBH TE PFORZHEIM, BONDSREPUBLIEK DUI

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
ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;NOKIA GRAETZ GMBH

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

Ref country code: GB

Payment date: 19891130

Year of fee payment: 6

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

Ref country code: FR

Payment date: 19891222

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19891231

Year of fee payment: 6

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

Ref country code: DE

Payment date: 19900222

Year of fee payment: 6

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

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 UNTERHALTUNGSELEKTRONIK (DEUTSCHLAND) GMBH T

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

Ref country code: GB

Effective date: 19901204

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

Ref country code: NL

Effective date: 19910701

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910830

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

Ref country code: DE

Effective date: 19910903

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST