CA1175876A - Television picture tubes and hole technology - Google Patents

Television picture tubes and hole technology

Info

Publication number
CA1175876A
CA1175876A CA000376484A CA376484A CA1175876A CA 1175876 A CA1175876 A CA 1175876A CA 000376484 A CA000376484 A CA 000376484A CA 376484 A CA376484 A CA 376484A CA 1175876 A CA1175876 A CA 1175876A
Authority
CA
Canada
Prior art keywords
opening
line
recess
aperture mask
sight
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
CA000376484A
Other languages
English (en)
French (fr)
Inventor
Roland Thoms
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.)
Buckbee Mears Co
Original Assignee
Buckbee Mears Co
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
Priority claimed from US06/148,683 external-priority patent/US4353948A/en
Application filed by Buckbee Mears Co filed Critical Buckbee Mears Co
Application granted granted Critical
Publication of CA1175876A publication Critical patent/CA1175876A/en
Expired legal-status Critical Current

Links

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
    • H01J29/076—Shadow masks for colour television tubes characterised by the shape or distribution of beam-passing apertures

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • ing And Chemical Polishing (AREA)
CA000376484A 1980-05-12 1981-04-29 Television picture tubes and hole technology Expired CA1175876A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14868280A 1980-05-12 1980-05-12
US148,682 1980-05-12
US148,683 1980-05-12
US06/148,683 US4353948A (en) 1980-05-12 1980-05-12 Hole technology

Publications (1)

Publication Number Publication Date
CA1175876A true CA1175876A (en) 1984-10-09

Family

ID=26846063

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000376484A Expired CA1175876A (en) 1980-05-12 1981-04-29 Television picture tubes and hole technology

Country Status (6)

Country Link
EP (1) EP0039906B1 (pt)
JP (1) JPH0713158Y2 (pt)
AR (1) AR223591A1 (pt)
BR (1) BR8102909A (pt)
CA (1) CA1175876A (pt)
DE (1) DE3175329D1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69126695T2 (de) * 1990-11-22 1998-02-12 Toshiba Kawasaki Kk Schattenmaske für Farbkathodenstrahlröhre

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881762U (pt) * 1971-12-30 1973-10-05
US3973965A (en) * 1972-05-30 1976-08-10 Tokyo Shibaura Electric Co., Ltd. Making shadow mask with slit-shaped apertures for CRT
US4069085A (en) * 1973-07-16 1978-01-17 U.S. Philips Corporation Apparatus for forming apertures in a thin metal tape such as a shadow mask for a color television display tube
US3916243A (en) * 1974-09-20 1975-10-28 Buckbee Mears Co Channeled shadow mask
JPS5310961A (en) * 1976-07-19 1978-01-31 Hitachi Ltd Color picture tube
GB2020892A (en) * 1978-05-10 1979-11-21 Rca Corp C.R.T. Silt Type Shadow Mask
US4293792A (en) * 1979-12-18 1981-10-06 Rca Corporation Color picture tube having improved slit type shadow mask

Also Published As

Publication number Publication date
EP0039906A3 (en) 1982-06-16
AR223591A1 (es) 1981-08-31
BR8102909A (pt) 1982-02-02
EP0039906B1 (en) 1986-09-17
EP0039906A2 (en) 1981-11-18
JPH069043U (ja) 1994-02-04
DE3175329D1 (en) 1986-10-23
JPH0713158Y2 (ja) 1995-03-29

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Legal Events

Date Code Title Description
MKEX Expiry