ES2013993B3 - METHOD TO PRODUCE BY STRETCHING A SHADOW MASK FOR COLOR PICTURE TUBE, SHADOW MASK AS MANUFACTURED AND COLOR TUBE INCORPORATED IN SUCH MASK. - Google Patents

METHOD TO PRODUCE BY STRETCHING A SHADOW MASK FOR COLOR PICTURE TUBE, SHADOW MASK AS MANUFACTURED AND COLOR TUBE INCORPORATED IN SUCH MASK.

Info

Publication number
ES2013993B3
ES2013993B3 ES86201961T ES86201961T ES2013993B3 ES 2013993 B3 ES2013993 B3 ES 2013993B3 ES 86201961 T ES86201961 T ES 86201961T ES 86201961 T ES86201961 T ES 86201961T ES 2013993 B3 ES2013993 B3 ES 2013993B3
Authority
ES
Spain
Prior art keywords
shadow mask
mask
color
tube
skirt
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
ES86201961T
Other languages
Spanish (es)
Inventor
Den Berg Adrianus Henricus Maria Van
De Kerkhof Marianus Antonius Gerardus Van
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of ES2013993B3 publication Critical patent/ES2013993B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

A shadow mask sheet 1 for a colour display tube consisting of an iron-nickel alloy of the invar type is drape drawn by means of a drawing process. During said drawing process the shadow mask sheet 1 is provided with a skirt 2. By keeping the rim 16 of the skirt 22 clamped in a slip-free manner during the drawing process, the skirt 22 can be plastically deformed simultaneously with the formation of the skirt 22, as a result of which the reproducibility of the shape of the shadow mask sheet 1 is increased.
ES86201961T 1985-11-11 1986-11-10 METHOD TO PRODUCE BY STRETCHING A SHADOW MASK FOR COLOR PICTURE TUBE, SHADOW MASK AS MANUFACTURED AND COLOR TUBE INCORPORATED IN SUCH MASK. Expired - Lifetime ES2013993B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8503087A NL8503087A (en) 1985-11-11 1985-11-11 METHOD FOR DRAWING A SHADOW MASK FOR A COLOR IMAGE TUBE, SHADOW MASK MANUFACTURED ACCORDING TO THE SAID METHOD AND COLOR IMAGE TUBE PROVIDING SUCH A SHADOW MASK.

Publications (1)

Publication Number Publication Date
ES2013993B3 true ES2013993B3 (en) 1990-06-16

Family

ID=19846835

Family Applications (1)

Application Number Title Priority Date Filing Date
ES86201961T Expired - Lifetime ES2013993B3 (en) 1985-11-11 1986-11-10 METHOD TO PRODUCE BY STRETCHING A SHADOW MASK FOR COLOR PICTURE TUBE, SHADOW MASK AS MANUFACTURED AND COLOR TUBE INCORPORATED IN SUCH MASK.

Country Status (9)

Country Link
EP (1) EP0224296B1 (en)
JP (1) JPH0754662B2 (en)
KR (1) KR950002261B1 (en)
CN (1) CN1007849B (en)
AT (1) ATE50470T1 (en)
DD (1) DD250398A5 (en)
DE (1) DE3669089D1 (en)
ES (1) ES2013993B3 (en)
NL (1) NL8503087A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1239511B (en) * 1990-03-30 1993-11-03 Videocolor Spa METHOD OF FORMING A SHADOW MASK FOR A TUBE OF REPRODUCTION OF COLOR IMAGES
IT1251416B (en) * 1991-10-23 1995-05-09 Videocolor Spa MANUFACTURING PROCESS OF A COLOR SELECTION MASK FOR A CATHODE RAY TUBE AND DEVICE FOR THE REALIZATION OF SUCH PROCESS
KR100281371B1 (en) * 1992-11-23 2001-03-02 요트.게.아. 롤페즈 Color selection means for color display tubes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584366A (en) * 1968-08-07 1971-06-15 Wallace Expanding Machines Process for manufacture of shadow mask frames
NL7508287A (en) * 1975-07-11 1977-01-13 Philips Nv METHOD AND DEVICE FOR DRAWING A SHADOW MASK AND SHADOW MASK DRAWN ACCORDING TO THIS METHOD OR WITH THIS DEVICE.
JPS59200721A (en) * 1983-04-27 1984-11-14 Toshiba Corp Manufacture of shadow mask
JPS6148523A (en) * 1984-08-10 1986-03-10 Toshiba Corp How to make a shadow mask
JPS6282625A (en) * 1985-10-04 1987-04-16 Toshiba Corp Manufacture of shadowmask

Also Published As

Publication number Publication date
CN86107752A (en) 1988-05-18
DD250398A5 (en) 1987-10-08
DE3669089D1 (en) 1990-03-29
JPS62113333A (en) 1987-05-25
JPH0754662B2 (en) 1995-06-07
KR870005431A (en) 1987-06-08
CN1007849B (en) 1990-05-02
NL8503087A (en) 1987-06-01
KR950002261B1 (en) 1995-03-15
ATE50470T1 (en) 1990-03-15
EP0224296B1 (en) 1990-02-21
EP0224296A1 (en) 1987-06-03

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