EP0063322B1 - Ensemble masque-cadre et son procédé de fabrication - Google Patents

Ensemble masque-cadre et son procédé de fabrication Download PDF

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Publication number
EP0063322B1
EP0063322B1 EP82103016A EP82103016A EP0063322B1 EP 0063322 B1 EP0063322 B1 EP 0063322B1 EP 82103016 A EP82103016 A EP 82103016A EP 82103016 A EP82103016 A EP 82103016A EP 0063322 B1 EP0063322 B1 EP 0063322B1
Authority
EP
European Patent Office
Prior art keywords
mask
frame
frame assembly
stress
mounting springs
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
EP82103016A
Other languages
German (de)
English (en)
Other versions
EP0063322A1 (fr
Inventor
Dietrich Berner
Rolf Reidinger
Rainer Vollath
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
Alcatel SEL AG
Standard Elektrik Lorenz AG
International Standard Electric Corp
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, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0063322A1 publication Critical patent/EP0063322A1/fr
Application granted granted Critical
Publication of EP0063322B1 publication Critical patent/EP0063322B1/fr
Expired legal-status Critical Current

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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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0727—Aperture plate
    • H01J2229/0766—Details of skirt or border
    • H01J2229/0772—Apertures, cut-outs, depressions, or the like

Definitions

  • the invention relates to a mask-frame combination, as used as a selection electrode in color television tubes, and a method for its production.
  • the three electron beams In a conventional color television tube, the three electron beams must hit the red, green and blue phosphor areas of the screen assigned to them exactly.
  • the necessary angle-dependent assignment of the color areas to the electron beams is achieved with the so-called mask.
  • the aim of the invention is to enable the economy of such manufacture by further simplifying the manufacturing process. This is achieved through an improvement in the design form that is tailored to this process simplification.
  • the focus is on the so-called blackening of the mask and its support frame, which can also be called surface passivation and mainly serves to prevent corrosion of the iron sheets used and to make the surfaces reflection-free and good heat radiation. So far, the mask has been assembled with its frame after it has been blackened separately, in order to be able to largely compensate for dimensional changes due to the temperature effect of approximately 600 ° C. during blackening. After assembly by spot welding, the mask-frame combination was stabilized at approx. 450 ° C, thus reducing internal stresses in the material that were caused by the welding.
  • the object of the invention is therefore to provide a simplified manufacturing process which does not have the disadvantages mentioned and to describe an improved form of construction of the mask-frame combination which is particularly suitable with regard to the new manufacturing process.
  • step 15 the frame is washed and degreased.
  • the blackening carried out in FIG. 16 is now carried out according to the invention together with the stabilization of the parts 1, 6 and 7 already welded to one another in FIG. 23.
  • step 17 three connecting links 7 are welded to the frame, on which the mask 1 is also fastened by spot welding in FIG. 22. Then the joint heat treatment for blackening and simultaneous stabilization takes place in step 23.
  • Step 24 denotes the insertion into the glass pan 8 and the attachment of the fourth connecting member.
  • the manufacturing process is then continued with shielding 25.
  • the connecting links 7 consist of bimetallic spring holder 7a and fastening spring 7b. With the fourth fastening spring, the welding only takes place after simultaneous blackening and stabilization. All other welds can be carried out as spot welds before blackening the parts to be connected. This results in firmer welds and has the great advantage that hardly any spatter is created which could get stuck in the openings of the mask.
  • a previously necessary production step of relieving the mask and frame and the associated effort of a continuous furnace can be omitted because, according to the invention, the temperature profile during the blackening of the previously welded mask-frame combination is limited to a maximum temperature of 580 ° C., and the effect of this temperature the mask only lasts until the frame is at the same temperature.
  • the deformation of the mask (“collapse") and the warping of the frame are so small that they can be changed within a maximum of 0.3 mm due to the inventive design of the mask-frame combination in the range of elastic expansion within the permissible range Limits can be included.
  • the simplification and improvement of the method is thus possible through the constructive design shown in FIGS. 1 to 5, in particular the mask, and the suitable choice of its dimensions and the position of the welding points.
  • the slightly curved mask 1 is intended to absorb the expansions which occur during production and operation with minimal changes in shape and position in the elastic range. This is achieved through the selection of A, B and C (see also FIGS. 3 and 4) and with decoupling.
  • the incisions 10, cutouts 11, the circumferential bead 12 and edges 13 (“aprons •) are used here as decouplings. It is not always convenient to carry out all welds. In particular, those that are close to the corners are not always useful and may also be left out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Claims (6)

1. Ensemble masque-cadre comportant un masque (1), exécuté dans une tôle mince pourvue de perforations (2) et munie d'un bord cintré (13), et un cadre (6) supportant le masque et muni d'éléments de liaison (7) constitués de porte-ressorts bimétalliques (7a) et de ressorts de fixation (7b), pouvant être utilisé comme une électrode de sélection des couleurs dans les tubes de téléviseurs couleurs, le masque, le cadre et les éléments de liaison (1, 6 et 7) étant soudés ensemble, caractérisé en ce que sont remplies sur le côté le plus long du masque, pour la distance A entre le milieu de ce côté et le point de soudage le plus proche (9), la condition D/4,5 < A < D/2,4, sur le côté le plus court du masque, pour la distance B entre le point de soudure et l'angle du masque le plus proche, la condition D/8,4 < B < D/3,0 et, pour la largeur C du bord (13), à partir de l'arête (14), dans lequel les points de soudure sont implantés, la condition C < (1,6 - D)/100, D étant la longueur de la diagonale de l'écran, et en ce que les points de soudure placés aux coins du masque sont soulagés de part et d'autre des tensions mécaniques grâce à des éléments de découplage (10, 11).
2. Ensemble masque-cadre conforme à la revendication 1, caractérisé en ce que les découplages sont exécutés sous la forme d'entailles (10).
3. Ensemble masque-cadre conforme à la revendication 1, caractérisé en ce que les découplages sont exécutés sous la forme de découpes (11 ).
4. Procédé de fabrication d'un ensemble masque-cadre conforme à l'une des revendications 1 à 3, dont les pièces (1, 6 et 7) sont soudées ensemble, noircies en surface et thermiquement stabilisées, caractérisé en ce qu'après avoir été assemblés par soudage par points, le masque (1) et le cadre (6) sont également munis de porte-ressorts bimétalliques (7a) et de ressorts'de fixation (7b), et en ce qu'ils font ensuite ensemble l'objet, sous la forme d'un tout composé d'un masque, d'un cadre, de porte-ressorts bimétalliques et de ressorts de fixation d'un traitement thermique et sont également thermiquement stabilisés étant entendu que l'action de la température se prolonge jusqu'à ce que le masque et le cadre parviennent à une température finale commune TE et que l'échauffement entre le masque et le cadre soit inférieur à environ 1/3 de la température finale commune TE, comprise entre 500 et 600 °C, de préférence entre 570 et 580 °C, et que le traitement de surface opéré simultanément à cette stabilisation thermique provoque également un noircissement de l'ensemble masque-cadre en présence de gaz de gazogène utilisé comme atmosphère protectrice.
5. Procédé selon la revendication 4, caractérisé en ce qu'une opération de passivation simultanée du masque et du cadre est effectuée en présence de 2 à 3 % d'oxygène.
6. Procédé conforme à la revendication 4 et 5, caractérisé en ce qu'à l'issue de la stabilisation et du traitement de surface le refroidissement de l'ensemble masque-cadre est accéléré par un abaissement de la puissance calorifique du four et par le choix du moment de retrait hors du four de manière que la température du cadre tombe au-dessous de TE/2 en l'espace de 4 minutes environ et - pour que les caractéristiques du bilame thermique des ressorts de fixation ne varient pas de manière trop importante.
EP82103016A 1981-04-18 1982-04-08 Ensemble masque-cadre et son procédé de fabrication Expired EP0063322B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3115799A DE3115799C2 (de) 1981-04-18 1981-04-18 Farbauswahlelektrode für Farbfernsehröhren und Verfahren zu ihrer Herstellung
DE3115799 1981-04-18

Publications (2)

Publication Number Publication Date
EP0063322A1 EP0063322A1 (fr) 1982-10-27
EP0063322B1 true EP0063322B1 (fr) 1985-08-28

Family

ID=6130493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103016A Expired EP0063322B1 (fr) 1981-04-18 1982-04-08 Ensemble masque-cadre et son procédé de fabrication

Country Status (4)

Country Link
US (1) US4806820A (fr)
EP (1) EP0063322B1 (fr)
JP (1) JPS5810353A (fr)
DE (2) DE3115799C2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60123945U (ja) * 1984-01-31 1985-08-21 株式会社東芝 シヤドウマスク構体
US5218265A (en) * 1989-06-16 1993-06-08 Nokia (Deutschland) Gmbh Combined mask-frame with double spot welds
GB2240211B (en) * 1990-01-19 1994-04-27 Samsung Electronic Devices Shadow mask frame for color picture tube
DE4119481A1 (de) * 1991-06-13 1992-12-17 Nokia Deutschland Gmbh Masken-rahmen-kombination fuer eine farbbildroehre
US5554909A (en) * 1994-05-06 1996-09-10 Philips Electronics North America Corporation One dimensional tension mask-frame assembly for CRT
JPH09161672A (ja) * 1995-12-12 1997-06-20 Sony Corp 陰極線管用色選別機構の組立方法
DE59707047D1 (de) 1997-01-30 2002-05-23 Matsushita Display Devices Ger Farbbildröhre mit einer Masken-Rahmen-Kombination
CN1462465A (zh) * 2001-04-25 2003-12-17 皇家菲利浦电子有限公司 制造具有改进的彩色选择电极的彩色显像管的方法
KR100460779B1 (ko) * 2002-03-05 2004-12-09 엘지.필립스디스플레이(주) 평면형 음극선관
TW201145440A (en) * 2010-06-09 2011-12-16 Global Material Science Co Ltd Shadow frame and manufacturing method thereof
KR101837624B1 (ko) * 2011-05-06 2018-03-13 삼성디스플레이 주식회사 박막 증착용 마스크 프레임 조립체 및 그 제조방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1426908A1 (de) * 1962-06-29 1968-12-12 Simmering Graz Pauker Ag Kombiniertes Gegendruck-Kondensationsverfahren einer Dampf-Turbinenanlage zur geregelten Abgabe elektrischer Leistung und Bereitung von Heisswasser mit wattmetrischem Regelimpulsgeber in der elektrischen Kupplungsleitung zwischen Fremdnetz und Eigensammelschiene
US3351996A (en) * 1965-03-29 1967-11-14 Rauland Corp Method of making a rectangular-mask assembly for a shadow-mask type of color tube
NL165327C (nl) * 1971-04-28 1981-03-16 Ergon Spa Schaduwmasker-eenheid voor een kleurentelevisie- weergeefbuis.
DE2549789A1 (de) * 1975-11-06 1977-05-18 Licentia Gmbh Lochmasken-farbbildkathodenstrahlroehre
DE2549732A1 (de) * 1975-11-06 1977-05-26 Licentia Gmbh Farbwahlmaskenanordnung fuer eine farbbildkathodenstrahlroehre
DE2602240A1 (de) * 1976-01-22 1977-07-28 Licentia Gmbh Farbbildkathodenstrahlroehre
FR2420205A1 (fr) * 1978-03-13 1979-10-12 Videocolor Sa Tube a masque pour la television en couleurs

Also Published As

Publication number Publication date
JPS5810353A (ja) 1983-01-20
EP0063322A1 (fr) 1982-10-27
DE3115799A1 (de) 1982-11-04
US4806820A (en) 1989-02-21
DE3265747D1 (en) 1985-10-03
JPH0363170B2 (fr) 1991-09-30
DE3115799C2 (de) 1985-05-30

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