ES342140A1 - Improvements in or relating to Cathode-Ray Tubes - Google Patents

Improvements in or relating to Cathode-Ray Tubes

Info

Publication number
ES342140A1
ES342140A1 ES342140A ES342140A ES342140A1 ES 342140 A1 ES342140 A1 ES 342140A1 ES 342140 A ES342140 A ES 342140A ES 342140 A ES342140 A ES 342140A ES 342140 A1 ES342140 A1 ES 342140A1
Authority
ES
Spain
Prior art keywords
mask
tube
tabs
envelope
glass
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
ES342140A
Other languages
Spanish (es)
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
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 Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Publication of ES342140A1 publication Critical patent/ES342140A1/en
Expired legal-status Critical Current

Links

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
    • H01J29/02—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
    • H01J29/073—Mounting arrangements associated with shadow masks
    • 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

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A mask 2 in a cathode-ray tube, especially the shadow mask of a colour television tube, which comprises a perforated non-magnetic metal sheet, is attached directly to the glass of the envelope 1 by tabs 5 cut out along the edges of the mask, the tabs being sealed in the glass of the envelope. Preferably the tabs are secured in the seal between the face-plate and the cone of the envelope. The mask may be held at the required tension by rollers during the sealing operation. If the mask is made of material having a greater expansion coefficient than the glass then the assembled face-plate, mask and cone as a whole may be heated in a furnace to an appropriate temperature, e.g. 420-450 C. for a vitro-crystalline sealing substance, whereupon the necessary tension in the mask will be produced when it is cooled. If, however, the seal is effected by a cement or cold seal the mask alone may be heated before the actual sealing takes place. The tube face-plate may be flat. Examples of the material of the mask and the dimensions of tube 5 and cutouts 4 are given.
ES342140A 1966-06-23 1967-06-21 Improvements in or relating to Cathode-Ray Tubes Expired ES342140A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR66607A FR1490705A (en) 1966-06-23 1966-06-23 Device for attaching a cathode ray tube mask

Publications (1)

Publication Number Publication Date
ES342140A1 true ES342140A1 (en) 1968-07-16

Family

ID=8611602

Family Applications (1)

Application Number Title Priority Date Filing Date
ES342140A Expired ES342140A1 (en) 1966-06-23 1967-06-21 Improvements in or relating to Cathode-Ray Tubes

Country Status (6)

Country Link
BE (1) BE700297A (en)
ES (1) ES342140A1 (en)
FR (1) FR1490705A (en)
GB (1) GB1163495A (en)
LU (1) LU53942A1 (en)
NL (1) NL6708029A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777202A (en) * 1971-06-16 1973-12-04 Gte Sylvania Inc High resolution cathode ray tube shadow-mask
US4283654A (en) * 1979-04-27 1981-08-11 Rca Corporation Modular tube shadow mask support system
JPS5725657A (en) * 1980-07-23 1982-02-10 Hitachi Ltd Character display color picture tube
US4591344A (en) * 1983-09-30 1986-05-27 Zenith Electronics Corporation Method of fabricating a tension mask color cathode ray tube
US4593224A (en) * 1983-09-30 1986-06-03 Zenith Electronics Corporation Tension mask cathode ray tube
US4721879A (en) * 1983-09-30 1988-01-26 Zenith Electronics Corporation Tensed mask cathode ray tube
US4614892A (en) * 1984-08-31 1986-09-30 Zenith Electronics Corporation Tension mask mounting structure
US4593225A (en) * 1984-08-31 1986-06-03 Zenith Electronics Corporation Tension mask colar cathode ray tube
US4686415A (en) * 1985-04-30 1987-08-11 Zenith Electronics Corporation Tensed mask color cathode ray tube and mask support frame therefor
US4652791A (en) * 1985-04-30 1987-03-24 Zenith Electronics Corporation Color cathode ray tube and tensible shadow mask blank for use therein
US4656388A (en) * 1985-05-17 1987-04-07 Zenith Electronics Corporation Tensed mask color cathode ray tube and mask support frame therefore
ATA331085A (en) * 1985-11-13 1994-05-15 Ims Ionen Mikrofab Syst PARTICULATE OR RADIO-RESISTANT MASK AND METHOD FOR THE PRODUCTION THEREOF
NL8503328A (en) * 1985-12-02 1987-07-01 Philips Nv COLOR IMAGE TUBE AND COLOR SELECTION ELECTRODE FOR APPLICATION IN SUCH A COLOR IMAGE TUBE.
US4704094A (en) * 1985-12-09 1987-11-03 Tektronix, Inc. Cathode ray tube and method of manufacture
US4710670A (en) * 1986-02-21 1987-12-01 Zenith Electronics Corporation Front assembly system for a tension mask color cathode ray tube
US4767962A (en) * 1986-07-02 1988-08-30 Zenith Electronics Corporation Color cathode ray tube and tensible shadow mask blank for use therein
NL8801943A (en) * 1988-08-04 1990-03-01 Philips Nv METHOD FOR MANUFACTURING A COLOR IMAGE TUBE
US4942333A (en) * 1988-12-05 1990-07-17 North American Philips Corporation Shadow mask with border pattern

Also Published As

Publication number Publication date
GB1163495A (en) 1969-09-04
FR1490705A (en) 1967-08-04
BE700297A (en) 1967-12-21
LU53942A1 (en) 1968-03-11
NL6708029A (en) 1967-12-27

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